HN in general has a very strict policy against what "people find interesting":
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.
Off-Topic: Most stories about politics, or crime, or sports, or celebrities, unless they're evidence of some interesting new phenomenon. Videos of pratfalls or disasters, or cute animal pictures. If they'd cover it on TV news, it's probably off-topic.
Also "just flag it" is not "wasting moderator's time", but the recommended procedure:
Please don't complain that a submission is inappropriate. If a story is spam or off-topic, flag it.Correct.
From my POV, there is no doubt HN is getting more and more involved in politics and more and more polarized, which IMHO is not good. But I'm just one of many users... if it keeps going that way, I may have to leave. Is ok. In the meantime I will keep giving my opinion, as that is the very least what I expect from such a site: to be able to give an opinion (respectfully) without being instantly attacked, verbally or downvoted to oblivion. As can be seen in this case, we are reaching the point where that is not possible anymore... Let's see if the honest people or the trolls win the "battle".