That's not my experience. A lot of people on HN seem to be concerned (performatively or not) with things like ethics, altruism and "making the world a better place", whatever that means.
And yes many people in tech are on the spectrum. I suspect that much of what's dysfunctional with SV and tech culture is the result of raising a generation of socially awkward neurodivergent kids on 4chan and making them millionaires before their frontal lobes have even fully developed. That necessarily bleeds into HN and becomes normalized within the culture as performative cynicism, misanthropy and toxicity.
Quote of the Month
To the point where I wouldn't be surprised if these people have or would kill people if they aren't in line with their agendas. They have the connections, power and money.