TheMysteriousMrEnter is a classic example of living long enough to see oneself become the villain. He started off his channel mostly calm, insightful, not overly negative, and not arrogant. If you watch his MLP reviews, most of them, while you may agree or disagree with his opinions, you can understand where he's coming from.
That said, he went from an insightful critic to a crusader in a snap. Ever since he started Animated Atrocities and Admiral Animation, he seems to be on this crusade to prove how horrible or how good some new/modern cartoons are, and all of the insightfulness that he once was good at portraying turned into meaningless slurs from the mouth of a whiney, pessimistic scrooge. It's kind of like that one guy you know who talks about one thing for a little bit, and he keeps talking and talking and talking more and more about it until you get lost and you want him to go away.
The biggest problem is that people treat his world like gospel, and if one publicly and shamelessly disagrees with Mr Enter's view, an onslaught of hate is coming your way, because Mr. Enter's clearly an expert in writing and logic. Back when I watched his MLP Reviews, I, admittedly, acted the same exact way. I took his word as gospel, and anyone who said otherwise was completely wrong, and I would direct them to Mr. Enter's video because he was always right. Now, I've learned to be my own man.
He once talked about Seasonal Rot in cartoons and how it can really make them terrible. If only he could see what he would eventually turn out to be.
"It is a good divine that follows his own instructions." - Shakespeare
"You either die a hero, or you live long enough to see yourself become the villain." - Harvey Dent, The Dark Knight