Was Felleisen's behaviour a "deliberate misuse of power... that intends to cause physical, social and/or psychological harm"? I don't know this guy personally and all I've read is some stories about him on these blog posts, but I'm not sure if he was deliberately intending to hurt other people, or merely doing so inadvertently out of social incompetence, deficits in cognitive empathy, emotional dysregulation, theory of mind deficits, difficulties in perspective-taking, etc? Individuals with neurodevelopmental and other psychiatric disorders can sometimes exhibit all of those inadvertent sources of interpersonal harm. (I'm not saying Felleisen has any such disorder – maybe he does, maybe he doesn't, I have no idea, so I must assume he might.)
[0] https://www.ncab.org.au/bullying-advice/bullying-for-parents...