Re HN: I think you might be falling prey to the notice-dislike bias, which is a variation of sample bias where the comments we dislike or cause us pain start to feel like they're dominating the whole site. They don't dominate the site—HN is divided much as society (all over the world) is divided. But it feels like they do, because painful data points land harder and make deeper impressions than the things one likes or agrees with. The people who have opposite views to yours see HN as dominated by their opposite side (which is to say, your side), because of exactly the same mechanism.
https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor...
https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...