Guess that makes him a 'growth hacker' :-)
More seriously though, I think it was targeted at folks who are currently not in a startup and are wondering about them, as told from the perspective of someone made the leap. When I left Sun for a startup I got a lot of the same sorts of questions from my friends who were still at Sun and had there been a blogging infrastructure then I might have written a similar piece as a sort of FAQ for them.