Politicisation has increased dramatically since the early 2000's in about every field imaginable, from intelligence analysis to technical inventions. The fact that we cannot have an electric car without the owner of the corporation expressing political opinions on twitter is a prime example of how there is politicisation creep in almost everything [0].

One particularly egregious example (to me) of this is the politicisation of science [1] by various factions like governments, advocacy groups etc. because if we lose the integrity of science bad things will happen.

All that to say, the line has blurred so much, I highly doubt you can separate these topics again. HN reflects that as much as any other site.

[0] https://en.wikipedia.org/wiki/Politicisation

[1] https://en.wikipedia.org/wiki/Politicization_of_science

"Most" is not "All". Hacker News has always had an exception for extremely significant politics.