Why I no longer contribute to Racket
This reads to me as a textbook case for how not to handle conflict. It doesn't appear as though the author ever discussed this issue with the Racket core team or informed this Matthias Felleisen person, whom I don't know, how their outburst had been received. The author never explicitly states they had done this other than stating the facts are not in dispute and these events were witnessed by members of the Racket core team, who are going to be reluctant to resolve the conflict on the author's behalf without solicitation (that's human nature - conflict avoidance). If that wasn't done and instead the issue was taken public then it's likely to be perceived as an ambush. Now you're in a state where both parties are aggrieved and so effecting a reconciliation at this point is nigh impossible.