Have you read the entirety of your link?
The author is proposing spay and neuter programs for humans some 39 years ago when AGW was in its crib.
It's an anti-family screed.
Philosophically his reasoning is faultless.
Malthusian mutterings are the hallmark of the ignored elite.
Yes, I read the entirety of Garrett Hardin's essay and other nonsense by him. He was a perfesser at UCSB where I went to school. That doesn't mean that I agree with his conclusions. His observations were very keen and I've observed for myself that there are some great benefits to parcelling out private ownership, like the fact that I (will some day) own my own house.
The key to environmental recovery is to give the devastated areas to people who care enough about it to protect it, while at the same time making a living off it. I don't know what "Malthusian mutterings" are, but one of Aristotle's maxims, that it is the mark of an educated mind to be able to entertain an idea without accepting it, is an approach that I find useful when I steal liberal reasoning for my own purposes.