First of all, no males, this is one HUGE reason why G3 would be a dystopia! If there are no guys, then within 20 - 50 years, no one will be around, since the process of reproduction would be impossible! Watch every G3 episode (if you dare) and count every guy you see (they HAVE to be mentioned as a he, don't count guys on appearance, also don't count Spike) excluding Spike, your final number should be *drumroll* zero. Two, every single pony is stupid, (They think that there are 4 colors in the rainbow and that one of them is pink, and no one noticed there was no candy cane on top of the tree in 'A Very Minty Christmas') If society has ONLY stupid people, then getting things done will be almost impossible since everyone would be confused on what to do, not only that, but the ponies act childish and naive, appear to be easily manipulated and think there is only good, anyone could manipulate them and enslave them just by saying good things to them and befriending them, speaking of that. Number three, everyone befriends everyone, a flaw that is a no brainer, that also adds to my naive statement, do you befriend everyone you see? No? Oh, because your new friend could easily be a serial killer or a terrorist, or something? Well that pretty much explains number three. Number four, the world the ponies live in is TOO utopian, what happens when they are manipulated and they loose their town? They won't know what to do, and this is because the ponies are SPOILED! Like I said, they are unintelligent, easily manipulated, and naive. And those are my reasons on why I think the world that G3 exists in is extremely unrealistic!
PS: I guarantee If you replaced every person who works in the US government with the G3 ponies, America would die within days because they don't have the mental capacity to run a government, I guarantee they would sing songs all day instead of working on improving America and keeping the country afloat...