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.
And the result is that the comments are really of very little use anymore. Time was they used to be enlightening.
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.