I don't think he has a writer credit, does he? I thought he was under "script consultant" like Matt Cutts and other industry peeps, who I imagine get calls and say "yeah do that," or "you should include X."
I dunno, from what's described it sounds like his input was on par with Andreesen's, except he wanted to be more involved. He's not mentioned after the first third of the article.
http://www.newyorker.com/culture/culture-desk/how-silicon-va...