Earlier quoted context omitted.
On HN, it's the article that matters. Most primarily-political sites have a downweight on them, but we turn the downweight off when a good article comes along. Or try to, at least; it depends on whether we see it or someone points it out to us.
Are you saying that they're algorithmically downweighted and that you manually turn that off when it seems appropriate? Interesting, I thought the feed was just based on chronology + votes! How quaint of me. Is there anything written anywhere about how the feed algorithm works generally?
The feed has always been based on more than just time and votes. For example, flags. Another factor is HN's anti-abuse software, like the voting ring detector. Then there is moderation. For example, moderators downweight certain kinds of stories, such as sensational ones or indignant ones, that routinely attract many more upvotes than others. Another example is the boosting system that was discussed recently here: https://news.ycombinator.com/item?id=19871809.
There's no article or essay about it, but I've posted many comments to HN about all of this over the years. None of it is secret, and we're happy to answer questions.