This is how a ton of fans, and even non-fans, felt Twilight deserved...
Twilight Sparkle has done some rather harsh and mean things before, but judging the CMC whom she knows very well and banning them from her school is a bit too much.
These are scenes I've made up showing what happened after Twilight bans them from the school, and how much she comes to grips with her error in judging others.