It's a insightful reply, I agree. I also don't like that thread that much, just because the guy was not a good human being, it doesn't mean that we need to reject all of his ideas because of his personality, that's a textbook Ad Hominem logical fallacy. I like that essay as an insightful essay regardless of the dude's history. Thanks for linking to that comment, though.
Listening to DFW speak that essay makes me really contemplative.