This is not a troll, and it is not inflammatory. It is reasonable discourse and an opposing view. These kinds of things are required for intellectual honesty.
It's especially ironic because the post starts out with a quote from pg:
I actually worry a lot that as I get "popular" I'll be able to get away with saying stupider stuff than I would have dared say before. This sort of thing happens to a lot of people, and I would really* like to avoid it*
Whichever moderator killed that link, and anyone downvoting this guy - high quality discussion allows reasonable minds to disagree. Censoring it because it is about pg is perpetuating the very problem pg describes.