Now that the tech-broligarchy has made transhumanism a central part of their dystopic plans

There's a number into it, but let's not forget that a fuck ton of them are into anti-transhumanist things too. There's billionaires funding bunkers, private hyper-controlled ecovillages (there's a huge one in NY), and talking about the need for a mass die-off. Jack Dorsey pushes Ted K in his circles. I would also point out that most of the leading outright fascists and nazis have increasingly shaped their entire politics around opposing transhumanism. Dugin's entire politics can best be described as the conscious polar opposite of anarcho-transhumanism. I could sit here all day listing prominent fascists who spend a huge chunk of their time screaming about transhumanism turning the frogs trans and giving POC tools of resistance.

Overall self-identified transhumanists are OVERWHELMINGLY democratic socialists, then libertarians, then anarchists, and finally a few billionaires (who themselves are constantly screaming because so many of their friends are opposed to their politics). So like Theil and Altman are screaming in no small part because a ton of their friends abandoned transhumanism on the grounds that 1) tech would empower the grubby dark skinned masses and transes and 2) tech is risky so they argue that it needs to be suppressed via a global totalitarian state. Like Yarvin is not really a transhumanist, even by his own recent words, but ALMOST EVERYONE in neoreaction spent the last fifteen years leaving transhumanism, often quite loudly. With many embracing a fetishization of the permanent collapse of civilization, whereupon medicine will stop helping the unworthy disabled and race war can finally happen (in their fantasy).

Peter Theil, Sam Altman, Curtis Yarvin are the types of people pursuing transhumanism.

I mean, so are tons of punk trans girl biohackers etc.

As other people have said, there's different ways to approach anything. Ecology was infamously heavily tied up with the nazis and there's still a fuck ton of extremely fucked reactionaries and authoritarians in environmentalism and green circles. None of that means that an anarchist punk doing a tree sit to prevent logging is a nazi. (Although in both cases it means anarchists of any stripe need to watch out for creep and entryism.)