Yes, he’s obviously crazy. The 100 billion shows how half-baked his thinking is.

Oddly, lots of the Guardian comments supported him,. Some commenters said that only rich people care about limiting the population. That gets me in a double rage. It’s fake concern for the starving millions.
Fewer natural resources per person-> more conflict over them -> the poor lose every time.
Just idiots.

A billion people don’t have sufficient nutrition. There isn’t enough fresh water in many parts of the world for people to drink.

But sure, we can feed a few more billion. And climate change will be beneficial, too, because everyone knows you can grow more food in warm weather than in cold. Of course, no one pays attention to the science that shows that hotter weather diminishes crops, weakens them, and makes them less productive. Some are unlikely to survive at all.

Malthus was probably close to right, or on the right track. He was simply done in by the advent of synthetic fertilizer made from oil and by technologies built on oil. We are rather fucked.