One trend that's bigger than tech is that educated professional class has massively consolidated into the liberal column in the wake of Trump, it used to be more like 66/33 lean liberal.
So that's going to impact any professional class community, whether it's tech or not.
I'm not sure this is true. I consider this website very much to the right of most web fora.
I was talking about the broader professional population, there's polling on this and they've (we've) really consolidated left as the right wing has become more and more about culture war.