HN tends to push up grifter hype slop, and there are a lot of those people around cause VC, but you can still see comments pushing back.
Reading reddit reminds me of highschool forum arguments I've had 20 years ago, but lower quality because of population selection. It's just too mainstream at this point and shows you what the middle of the bell curve looks like.
I don't think there's a lot of groupthink or virtue signaling here, and those are the things that irritate me the most. If people here overestimate their knowledge or abilities, that's okay because I don't treat things people say as gospel/fact/truth unless I have clear and compelling reasons to do so. This is the internet after all.
Personally I also think the submissions that make it to the front page(s) are much better than any subreddit.