If you go out and look, land held in common tends to be managed well, and privately owned land tends to be exploited. But in 1968 a eugenicist named Garrett Hardin pulled a paper out of his ass that said exactly the opposite with no evidence, and the owning classes thought it was brilliant.
Does it matter that Hardin was a eugenicist? Yes, because it's the same kind of evil thinking. To support control of human breeding, you have to be comfortable that the people who will be doing the controlling, are people like you. So you have to be confident that you are a member of a justifiably power-holding class. Hardin also wrote a paper on "lifeboat ethics," again a thought experiment with no evidence, arguing that it's bad to give money to the poor.
Note that the ecological destruction of the modern era is not an example of the "tragedy of the commons," but the tragedy of central control and private property. Related, from 2007: Iain Boal: Specters of Malthus, a smart interview arguing that population only outruns food supply when there's non-local control of resources.
I should also say, to reduce the human population, we only need two things: easy access to birth control, and some way of supporting old people who don't have kids. If people don't need to have kids for economic reasons, and if women aren't forced to be baby factories, then the birthrate drops to sub-replacement.
More negative links. Amazon Prime Is an Economy-Distorting Lie. Basically, by forcing third-party sellers to keep their prices high, and charging them massive commissions, Amazon subsidizes its free shipping. Without illegal monopoly practices, Amazon's business model falls apart.
A lot of pandemic homeschoolers are not going back. On the same subject, by Rebecca Solnit, Abolish High School.
Finally, The Age of Autonomous Killer Robots May Already Be Here, because last year in Libya a weaponized drone hunted down a human target without being told to. If we want to avoid the normalization of killer robots, we need a law that explicitly denies robots the right of self-defense. So if you try to destroy a drone, the most it can do is take your picture and use it to bring charges for vandalism.