There are plenty of people on HN who go to some effort to comment with thoughtfulness and nuance, and who try hard to help others understand complex issues by discussing them in great depth.
In this case you've encountered people who don't comment in such a way, but that's more likely to happen when you invoke highly controversial issues without great caution.
Indeed this is why the HN guidelines ask people to avoid introducing flamewar topics, as reactions like this are inevitable, not just on HN, but anywhere on the internet.
Take it from someone who's been on HN for over 10 years: the good far outweighs the bad, but it's up to all of us to make the effort to keep the standard high.
In this case you've encountered people who don't comment in such a way, but that's more likely to happen when you invoke highly controversial issues without great caution.
Indeed this is why the HN guidelines ask people to avoid introducing flamewar topics, as reactions like this are inevitable, not just on HN, but anywhere on the internet.
Take it from someone who's been on HN for over 10 years: the good far outweighs the bad, but it's up to all of us to make the effort to keep the standard high.