My opinion is that this place is great for two reasons: It's narrow focus on one topic, and a userbase that consists of experts in that one topic. When Hacker News strays from it's area of expertise I feel that Gell-Mann Amnesia is apparent and the quality of discussion much lower. Again not just for the politics but for other random news as well.
https://news.ycombinator.com/newsguidelines.html
> On-Topic: Anything that good hackers would find interesting. That includes more than hacking and startups. If you had to reduce it to a sentence, the answer might be: anything that gratifies one's intellectual curiosity.