Having lived through my share of bubbles, it always surprises me that people think they can predict the future. The phrase I hear is, "That could NEVER happen again." And then it does. I agree with thelynchmob1's comment, too. Many younger people are seeing startups as an antidote to corporate life, but they don't have the experience that working for a larger company can give you first.
Really good piece. Although it still seems like a bubble to me, but I understand his point about an anti-bubble of talent. There seems to be a "me too" aspect to this, where it's not just that doing a startup has become cool, but other routes for young people -- more studying, or getting a job -- are actively becoming uncool and unattractive, and carry a certain stigma.