I'm not convinced. I think that gives discord and others an easy excuse to censor people or communities they don't want on their platform, but I just don't buy

I'm not convinced. I think that gives discord and others an easy excuse to censor people or communities they don't want on their platform, but I just don't buy that their real objection was rudeness. This is an effective excuse because not many will come to the defense of socially unacceptable behavior. Look no further than this thread for examples of that.