There's definitely wrongthink/ideological flagging and downvoting going on.

(On some comments I make, I know when I make it that it's going to get downvoted, because it pushes against an opinion of the kinds of people who will downvote to suppress criticism. It used to be that criticizing cryptocurrency would get downvotes, but now it's popular to criticize. I can get reliably downvoted any time that I suggest that adding a fee for some basic public infrastructure (e.g., to drive on street in a city), in a "market-based" way, is a handout of the basic public infrastructure to the wealthy. Also, suggestions that there's still any bias against women, in anything, somewhere, seems to reliably get downvotes, no matter how relevant; I don't know why, but I'd guess it's because the topic has a lot of general angry sentiment, and people who are angry the other direction aren't represented as much on HN.)

I'd distinguish wrongthink from something being off-topic and done-to-death or a flamewar magnet. Maybe one mental exercise test for this is whether the same person would also still downvote as "topic" if the opinion of the post/comment were flipped.