Stories dominating coverage elsewhere mostly shouldn't dominate HN. That's not a particular political position—it just follows from the type of site we're trying to have here (https://news.ycombinator.com/newsguidelines.html).
Plenty of stories with political overlap [1] still get discussed on HN. Your list seems cherry-picked to me - presumably because those are the topics you dislike, and mostly people overemphasize, and are more likely to notice, the data points they dislike [2].
I'm not sure where you got the idea that HN doesn't have rules, but it does, and they certainly exclude abusing other members [3], doxxing [4], etc.
[1] https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...
[2] https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
[3] https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
[4] https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
The commentariat's genteel reputation also evaporates once you step into the "political" threads HN does allow, namely immigration, outsourcing and of course, crime in San Francisco.
A former head of state in Ycombinator's home country is headed to trial, and a coup plotter in the world's current largest military conflict is apparently dead. Both of these are historic events, but you'd never know that on HN.