well, the really important reason is probably "sam altman molested his sister", in combination with the general regulatory-cartel anti-open-source mentality of the whole organization and rationalists in general
Also the fact that both Microsoft and google pivoting to that concept and it being another huge waste of electricity overall for what it actually accomplishes - being a less reliable search engine touted as the big new thing. It just comes across as a new blockchain to me; ruinously inefficient
There's a lot of very dumb trend-chasing going on and I am not a fan of what Google's been doing to their search engine, but the 'waste of electricity' argument is a fully general argument against a private sphere at all
Consistently applying that principle is a scarcity-brained totalitarian nightmare where every action is potentially subject to the approval of a mob of halfwits on the internet. There is no life without consuming energy!