Moderators and longtime top contributors to HN come to recognise that these regular dramas about politics and culture wars bring out the worst in people, and lead to the very worst discussion threads we see on HN, precisely because “everyone has lots of feelings” about them.
It’s not wrong for people to have strong feelings about these topics. They're important issues, we get that, and that's why we try to be at least somewhat accommodating of discussions about them.
But when they routinely turn out to be the worst discussions we ever see on HN, and start to turn HN into something very different from what it is intended to be, we think that maybe these discussions should happen on the many other places that want to attract and encourage them, and not so much on this little corner of the web that’s trying to be something different.