Also, about plagiarism. I don't have time for now, for looking into theymos quotes where he says that if someone net positive he can be unbaned. If whole community supporting someone, doesn't that means that this person is very net positive?
It means they are a net positive at least for specific people supporting them. The final call is with the admins. You can message them every once in a while until they explicitly tell you 'no', other than that there's nothing you can do.