It's a very complex issue.
On one have. Having children or not is a deep freedom that feels wrong to constraint, one way or the other. I don't think messing around with "how many lids" should anyone have is good.
But on the other hand, I reason that resources are not limitless, and human footprint on the environment will be bigger the more humans there are. So O do think that the world would be a nicer place if there was less humans around. Less pollution, less worrying about ending up resources, more available land for each human, less over-crowdled everything.
But I won't be the one saying anyone to control their biological functions like that. At most I just wish more people realized of this and would voluntarily try to find a stable number of humans on earth that would be an order of magnitude less than we have now.
So yeah, in general I don't agree with anti-natalism as presented.