This is not even about the topics. HN has very clear moderation rules about tone of comments for example, rules against astro-turfing, rules about accusations of astro-turfing, and many others. Comments have to be substantive, otherwise they are voted down. Comments must not encourage flame-bait, otherwise they are removed.

HN is very highly moderated and you could even say tone-policed, and that is a major part of why many of us here like it.