Interesting write up. However, I don't see the point of picking apart a small paragraph, which, IMHO, was meant to provide mere guidance and perspective.
All the other points made in this 'response' are all fairly obvious and again, IMHO, already being worked on.
I think PG was spot on with his guiding essay; many things stand out and serve as a guide for people formulating ideas for a start up. If I am going to seriously undertake the task of building a start up, and dedicating an important part of their life to building something, I'd take all the sound guidance I can get.
Especially liked how this was put together: