Of course it signals credibility. I suppose you can argue that the entire effect of social proof doesn’t exist, but I’m sure there are better uses of that groundbreaking knowledge than commenting on HN!

So then why don't you do everything Joe Rogan says? You should be powerless before his tremendous social proof. This is the kind of "I'm special smart, the other side are sheeple" discourse that is pointless.

If I found Rogan entertaining enough to listen to him frequently, it probably would affect my behavior. Instead, I have other people who I pay more attention to and whose social proof probably does unduly affect my decisions :) Lol I’m not the one here claiming to be immune to it!

Everybody is using heuristics to navigate an extremely complex world, most of the heuristics are pretty good (which is why they persist), but they also have corner cases.

Social proof is one of those heuristics that should be taught in school so people would learn to discard. In fact multiple pieces of cognitive bias should really be taught in school…