That's irrelevant if the the resource usage is already far beyond what is sustainable. If you take on a lot of debt that you can't pay back every single year, claiming that you're going to stop taking on new debt is not the win you think it is.

In addition, resource usage grows when peoples lifes improves. So we don't need to have more people, we can just give more people basic rights and have economies like India grow. Their consumption of luxuries like meat is constantly rising, because more people can afford it.

An extreme example (from memory) is Ghana. One american uses as much CO2e as 200-ish Ghanans. Imagine a miracle happens, and we stop with the neocolonialism. Suddenly, Ghanans can afford the basics, and they use twice as much CO2e pP.