At this point I'm sure he's done well enough as an angel investor and with Google Ventures that he doesn't have to do the whole founder thing any longer. So I respect that he tries these little projects and then gravitates toward what users respond to.
It's a nice counterbalance to the obligatory "we must be changing the world" emptiness that is so often spouted. Some people just want to work on cool projects with people they like. That's OK.