I think you're exaggerating here. HN doesn't have a universal opinion about anything. Sure, there are people who have the attitude you describe (although it's rare that a single person has all of those stances), but there are also people who don't. HN commenters overall have pretty diverse opinions about those things, and for each one of them you can find commenters who are of the opposite opinion.
> HN doesn't have a universal opinion about anything.
That's a matter of perspective. I don't think a literal interpretation is useful. There will always be some troll promoting vile or insane things for attention (among other reasons). Functionally? The internet tends to ensure there is always some zeitgeist. Eg https://mjg59.dreamwidth.org/28232.html
The world is a big pile of topics, including recent events and discoveries. Users don't see the most sacred cows or derided topics, because they are not promoted, flagged or otherwise down in the pile. This is common among most modern internet communities, as opposed to flat hierarchy formats like newsgroups.
> HN commenters overall have pretty diverse opinions about those things
