1. PG's essay outlines a theory that the majority of the world is conventionally-minded and doesn't like to discuss new ideas. The comments here perfectly resemble that theory. PG wins. (Edit: at the time of writing, the comments were exclusively negative. This has changed since.)
2. If you don't like his writing and his world view (the brave startup founder is the hero), then why come to HN? Why support someone's website and accelerator/fund if you think they are so wrong?
3. While recognizing the limitations of this framework (see below), let's recognize that PG became very wealthy by employing the brave founder thesis. There's got to be a lot of truth there.
If there's anything wrong with PG's writing, it's that he doesn't spell out the truth for you - which is that in 99% of the cases, you're not the target audience. This essay is the perfect example. The quadrant he's romanticizing about is the smallest one, and of course most people are not going to see themselves resembling those characteristics. Many other essays have this quality - it's easy to walk away realizing that you're either not young enough, or not hard-working enough, or not smart enough, or not in a position to take the required risks to be the target audience. And that hurts, because it's true. Just don't shoot the messenger.
For clarification, all you get from being a part of PG's target audience is having a certain set of traits which are good for one thing, but would also disqualify you from being an astronaut and pursuing many other desirable careers.