Totally agree. I've largely quit commenting here at all because of it. I always thought gross polarization of topics would never come to HN, but here we are.
Serious note: forums decay. Entropy in social media, and forum denizens exists. Such a result is unsurprising,
Too bad Paul Graham doesn't give a rat's ass. He has the opportunity to create something beneficial to world society here but doesn't care to put in the money and thought to figure out how to make it work.