Talk is indeed cheap.

Thing is, while there are many historical examples of a highly organised bunch of people with a lot of resources who engage in campaigns of violence for various reasons, many such attempts fail disastrously.

Furthermore, given the goal is "no really everyone stop now", this isn't something where violent direct action in e.g. the USA alone would suffice. Has to be global to work, otherwise you just change which language and timezone the disaster starts in. You'd not only need to convince the, e.g. US government that this act of terrorism shouldn't be met with lethal force and even more of the surveillance state we saw since 9/11 (and remember, lots of the people pushing AI now are already big on surveillance capitalism, and the VC money comes from the people running this very forum, so when I say "this will not go well", I kinda mean "I assume at least one person currently working at each of Meta, Alphabet, OpenAI, Anthropic, SpaceX, and Palantir are reading this thread even without any automated processes of their own to tell them about it" :P)

This is a coordination problem on par with historical examples such as "Communism". Which, er, yeah. 70 years after the book was written, Russia had a short flirt with a lite form of it before it became an excuse for a series of "meet the new boss same as the old boss" who stayed around until Glasnost.

This would be a really really bad thing to replicate. Both for the "new boss same as the old boss" part, and the "not actually global" part.