i don't know what he's supposed to have done wrong. do you guys have links/screenshots?
He orchestrated a troll invasion of the forum. Used to post a lot of very disturbing images. Went to great lengths to character assassinate posters (like writing a short story about a poster having a light BDSM relationship with Hitler). Would prey on people's insecurities for example by making disparaging comments about the appearance of someone having body image issues. Etc etc.
He had a pretty consistent pattern of going out of his way to hurt people for no clear reason. He seems to be the kind of sadist who gets kicks out of that. He's become better at hiding it in recent years so newer posters will be less aware but it still comes out every once in a while and I never seen him apologize or even acknowledge this pattern so I don't believe he has genuinely changed.