I don't know if it's just me, but the thoughtfulness of of the average HN comment has seemed to decrease in the last few years. Feels more populist/Reddity the last couple years.
I'm pretty sure it has. If you look at threads from a decade ago, they're completely different - much less dramatic, much higher quality, way less populist and full of manipulative language.
Use those downvote and flag buttons!
You haven't been paying close attention. This has been going on for about 15 years. I'd say we had 5 good years here before the quality began dropping precipitously. If you got here after about 2012, you're probably part of the problem.