>Not sure why you're being downvoted. HN is pretty intolerant of anything that isn't the far left, which is a bit ironic for what's supposed to be an entrepreneurial forum. This change seemed to happen a year or two ago. I suspect HN has been fully "redditized" now with college identity politics being the prominent narrative. The drive-by downvotes are just a symptom of that.
I have seen more downvoted content here lately, but it's largely due to it not being very good--one liners, throw-away stuff, etc. I'm glad that's getting shuffled off to the side.
As for any shift in politics, I haven't seen that, but I have noticed that unchecked assumptions about libertarian-leaning ideas no longer get a pass. Still, that doesn't mean the site's becoming a leftist "college identity politics" (I can't even respond to that) thing, just that people expect thoughtfulness.