Can you be more specific? This is new to me, but I'm not familiar with Californian history.
https://en.wikipedia.org/wiki/Effective_altruism
Edit: Another comment suggests Effective accelerationism.
It has some interesting ideas, and also gave us people like Sam Bankman-Fried.
Edit: saw the other responses. I don’t think effective altruism was the right answer. Effective accelerationism, which came out of effective altruism, has all the ideas about human extinction and needing to develop AGI at all costs to save the species insanity.
Members of these groups are deeply embedded and heavily represented within top AI companies. Anthropic is particularly impacted, as its leadership is almost entirely made up of EAs. One of EA's goals has been to get EAs hired at the major AI labs so that they can influence AI's development. If you ever hear people discussing their personal P(doom), you're listening to a discussion topic originated by rationalists.
I say this neither negatively or positively, it's just that US news is, for now, the only international news, in both tech and politics.