When it comes to mathematics, you won't find any well-informed commenters on HN. Or, at least, 99% of commenters have no idea what they're talking about. It's infuriating. I try to just ignore it now and let it wash over me.
Eg:
https://news.ycombinator.com/item?id=50046857
Like, recently, I "learnt" to be jealous/suspicious of people on youtube who marvel at the engineering of spiral escalators ..