I don’t mean to be crude but it’s kind of irrelevant what the specific definition of bullying is, and it’s definitely irrelevant what his intentions were. Many people find his behavior extremely unpleasant, belligerent, mean, etc, as evidenced by the thread on Butterick’s original post, and the OP in this thread, describing being yelled at and insulted. Having a disorder may be a partial explanation for why someone behaves a certain way. It’s not an excuse for behaving in a way that other people find antisocial, and it certainly doesn’t bind others to tolerate that behavior.

Ultimately even if you actually could not act any differently because of a disorder, others would still not be required to tolerate you. This is a consequence of being social animals, we set expectations for behavior and we enforce them. If you can’t play the game, you can’t exactly expect people who can to stop playing for your sake.