I don't know him personally but I read the stuff he writes, and while his character can be a bit abrasive he's an extremely intelligent dude who can make astute observations and connections that other people miss. I think you're doing him a lot of disservice by dismissing him the way you did.
(That's a trick question, since the answer is going to depend on the person's intelligence and ability to make observations.)
Also, a ton of long-time Googlers agree with the stuff he says. It's not like he's some lone dissenting voice.