He really doesn't know what he is talking about.I think it's a sign the species is just adapting slowly to it's circumstance, which is incredibly positive. We can't keep breeding and expanding until there's no room for anyone to stand up.
And as far as @Ikaika ragging on Japan, so what if their economic growth is slowing. They have so much work over there that everyone is valuable again. You can keep working until you're 90 if you want. You can find a place to live that isn't going to take you 30 years to pay off. That's how it's supposed to be. This hyperfocus we have here in the states on economic growth and ROI, to the point people become a burden instead of an asset, is a sickness that needs to be cured.