At least from my point of view his comments weren't meant as a criticism of twitter so much as a neutral observation. He also didn't seem to be disparaging the monetization of twitter, but simply making a prediction for its evolutionary path he sees it following.

Overall, I think incubators (tech or not) have a looooong way to go before there's truly a glut. My guess is there are for more smart people couped up in non-entrepreneurial ventures than is socially optimal.

Certainly some are higher quality than others, but I still think the incubator business model has a lot of in roads to make.

Ideally, they'd start to form in areas besides tech.

While I think a few of his points are going too far, (especially the one about the environment), I think overall he makes a good point. Particularly the difference between our identity online and our real identity.

Often people over-invest in their online identity, since it's a path of least resistance to credibly maintain a certain image of yourself. Working on performing in person is hard.