You don't believe that having fewer people in the world would lead to less pollution and less harm to the environment due to human activities? Or you don't believe someone is suggesting that there needs to be fewer people?

It seems clear to me that if there were only 5 million people in the world then human caused climate change wouldn't be an issue. Isn't that obvious? I'm not advocating that we get to that level. I'm just pointing out that there exists a number for the population such that human caused climate change would no longer be an issue. I don't think it's disputable that this is so.

I'm not advocating mass killings or anything like that. Just pointing out an obvious thing. If where were way less people then pollution, etc. would not be an issue.