The funding environment has changed quite a lot since then. YC didn't even exist when FB started.
And FB would clearly be in that 100, given the massive growth it had. For every potential FB, there are lots of borderline useless apps that get funding, and wouldn't have when FB was first funded. Those people could have instead been working on FB.
He's not complaining that startups are getting funding, he's saying that the overavailability of funding is acting as a repulsive force, keeping engineers from grouping up.
Whether that's a bad thing on the balance, I'm not sure, but it's not an unmitigated good.
That is exactly right. I would actually be very surprised if he believed what he was saying considering everything he has seen and been involved with. To say things will consolidate and stop as they are is extremely short sighted for one so experienced in these matters.