1. The comment you're replying to explicitly acknowledges this fact in an aside.

2. It is not full of "coded bigotry." These are simple fact that almost everyone agrees on. India has explicitly made it a goal to reduce their fertility rate over the past few decades because of the problems of overpopulation. China's economy absolutely benefits from a high population. And yet I doubt you would characterize their humans rights record as stellar. It does not mean that Indians or Chinese people are in any way inferior to Westerners. And I highly doubt that the OP would agree with that either.

3. Even if it was, that isn't a critique of the comment's argument. It just means you find it distasteful. So what?