Thats not my read of the situation. I agree that if his goal was to convince the authors, it would make sense for him to be more accomodating. And it wouldn't make sense to call them out in public.
But thats not his goal here. To my eyes, this piece takes a shot at the culture which produced their editorial decision. He's calling cancel culture (and its adherents) craven and scared, using this situation as an example.