OK, let's take this point by point, shall we?
#1. "I would say what is wrong with this part that provokes such reactions? Are some over-sensitive? Why overreact on a thing that has been done over and over in other cartoons? How is this suddenly harassment, ASSAULT, soon RAPE maybe?? And why are such made with the pure reason to make you laugh out considered a huge problem?"
First, don't pull the over-sensitive card with me, I am VERY libertarian when it comes to art and creative properties and media, and identify as a moderate conservative. So I'm not the PC police or anything.
Second, yes, this kind of thing has been depicted in other cartoons or animated films before, but it is all about CONTEXT! In the case of cartoons, the types of cartoons that would show something like a character trying to kiss another character while they're sleeping is usually something like the Looney Tunes where that would be the punchline of a joke in a sketch where no lesson is being taught, everything is purely for comedy. In the case of old Disney Films like Snow White or Sleeping Beauty, for starters those came out decades ago, and on top of that those princes were at least usually doing that to actually save a princess, not JUST sweep them off their feet (not to mention in some cases the prince already knew the princess, even if they'd only met like once).
In this context, it is an episode where Big Mac is actually trying to start a real, genuine relationship with Sugar Belle. It is not a Looney Tune's sketch where everything is comedy and it is not a Disney fairy tale where he needs to kiss her in order to save her life. At this point in the episode, he only knows her largely as a business acquaintance, and they've had a couple of flirty exchanges a few times, but that is it. Neither of them has asked the other out yet, which makes what he did completely inappropriate, out of character for him since Big Mac is far smarter than that, and something that Sugar Belle rightfully freaked out about, and not in a comedic way, but a genuinely freaked out manner (I imagine her reaction would have been stronger if Feather Bangs hadn't shown up a second later, but at the very least the writers didn't try to make her the butt of the joke, they seemed to show her with an apt reaction). I have it on good authority from a close friend here himself, who has been married, that it's not even a good idea for a married partner to kiss his/her partner unbeknownst to them while he/she is sleeping as even that could freak them out; that rule applies a hundredfold in this situation given how Big Mac and Sugar Belle know each other at that point in the episode.
#2. "How is Big Mac with love potions not creepy, because I see the same logic."
It's not good, I referred to it in my own review of this episode as basically the Equestrian equivalent of a magical roofie, BUT the difference is that that wasn't his idea! That was the Cutie Mark Crusaders, and while it was a horrible idea that could have had terrible consequences for both Big Mac and Cheerilee, they didn't know what they were getting into at first since they were so young so they get a bit of a pass for their age.
#3. "And frankly, I find the scene funny, I doubt younger audience got shocked, stunned, depressed to see Big Mac moving his lips towards Sugar Belle? For that logic, we should ban Bon-Bon and Lyra because look they promote the younger audience to deviate from being straight."
If you're interpretation of Bon Bon and Lyra is that they are a couple, that's perfectly fine and valid, the show has given us enough material to MAKE such a valid interpretation. BUT because the show writers are competent and know that doing so so explicitly in a children's show to the point that it couldn't be interpreted any other way would rub many the wrong way, they've made it just as valid to interpret those two as just being best friends as well. Even if kids are interpreting it that way, I'm not quite sure how that's comparable to this. LGBT relationships are only a deviant thing depending on the religious or social community you belong to, they are not a universally condemned thing worldwide like sexual assault is. It's also not comparable because Lyra and Bon Bon have always been depicted well together, there has never been poor writing involving either of them; this awful scene was born of lazy, incompetent writing that, in the course of going for an ill thought out joke, depicted in a benign manner a stallion attempting to kiss, in a serious way, a mare he was legitimately interested in getting together with while she slept and while they were not in any sort of romantic relationship or even courting one another, and played it all for laughs as though if someone were to do that and get caught, people should just laugh it off.
#4. "How is this OK in comparison? If anything makes things look bad it is when something like that gets needlessly much attention and some go sky high loud over it. Same with racism, same with anything.
I can't accept this kind of over-sensitivity behavior because if anyone's like that, wow stay away from them. You may look at them, they will think you are sexually harassing them, you will say black even if not referring to them, they will call you racist, uh stay away. I know that a lot of the MLP lore describes the history of America but this is still a fantasy world and more like a fairy tale, don't act like the cop in Equestria."
Over-sensitivity in people promoting political correctness is undoubtedly a problem, but you are mistaking revulsion at something that is just plain bad as me trying to be politically correct. That is not the case in the slightest. Anyone who actually knows me here (which you do not seem to) know that I am incredibly open to all manner of depictions in media and people pushing the bar, including on MLP itself. MLP has rarely ever in a serious manner broached the subject of romance and its complexities, and given that its target audience is still largely children, it is incredibly important that they do so carefully when they do. They also owe giving smart writing to the subject at this point since they know that so much of their audience is made up of teenagers and adults as well.
I have no idea why you are directing so many of these assumptions about how I behave in real life (your examples about overly-sensitive PC behavior) at me when you don't even know me. You seem to have read one single review of mine (for what is now my least favorite episode of MLP ever which I can barely even consider to be a part of the show) and if you had read my others at the least you'd have a far different idea of who I am. I am no "cop" in Equestria, I am a passionate but fair-minded fan and critic of MLP who enjoys critiquing the show, and I call bull shit where I see it. That episode was 110% grade A horse shit in so many of the most important ways.
#5. "What's these accusations, I feel someone should not be doing anything around you. I am all for following the law and rules but I think some people are over the top, the small deviation from them and those people go nuts.
Like look Bigmac and Sugar almost lips kiss *ye ye excuse them that they are just touching noses but don't excuse Big Mac', so what is this now, making love by your standards?"
So once again we're at this point where you think you know everything about me from a single review of a single episode that put me in a particularly bad mood because it rubbed me the wrong way. Man, just stop, I'm not some jerkoff who goes around making wild accusations at everyone about harassing people, I hate those kinds of people. I am a perfectly balanced, well-rounded individual with plenty of my own personal quirks, but I am NOT that kind of negative and never would be. The fact that a guy like me hated that episode so much should speak to how bad it is.
And no, no, no, no, no, I absolutely adored their little nose touch at the end, hell, I've WANTED MLP to make more attempts at depicting romance. I think kids should have healthy depictions of romance in media directed at them to watch, including even the idea of physical romantic gestures like kissing as being a good thing. Heck, I love the idea of Big Mac and Sugar Belle together, and I think they'll be great going forward, it's just that the episode they got together in was awful in so many ways. As I said, if you're going to depict a romantic relationship in a kids show or movie in a serious manner, however, in a way that you are trying to teach a lesson to kids and adults, then you need to be bucking careful and make bucking sure you have your shit together before you do! This episode did not, not in the slightest. Anyone wants to fight me on that, I will, because this was so bad it didn't even seem like it belonged in MLP.