I don’t think its that strange of an “accusation”. In fact I’d call it a “hypothesis”.

DHH is a popular person. He gets people to change their behaviors when he calls them out (see his prior Twitter rants, I can’t recall any examples other than Zoom, etc). DHH even admits that he is popular and may be able to get the rules changed for himself, which is probably a big reason he is being vocal - small developers do not have the same platform as a Formula 1 hundred-millionaire who also created RoR.