Since the days of USENET there's always been a significant cluster of that kind of views in the tech sphere. Tech does not magically make people more liberal, it's just that going to university sometimes does.
> Tech communities like this skew more libertarian
Indeed, this is historically a forum with lots of "temporarily embarrassed billionaires".
My observation is the opposite of the GP - that labor identity and consciousness (not "liberalism") is rising here, pushed in no small part by the transformation in labor value that LLMs have caused.