Because he took down this thread and reposted it with the exact content to try to get more engagement.

That is a reason to downvote the thread, but not the comment.

The "sexual maturity at 25" thing is also a classic argument of people trying to close the overlap between the healthy fertility window and social acceptance window to zero among Whites in the West, while everyone else pumps out kids.

Yeah, I really doubt that anyone thinks that 24-year-olds should not have sex, or that this is used for that at all. Like I said, I dislike the argument for different reasons, but not because it's anti-[w]hite.