if you say "less humans", surely you mean "less ultra-rich humans", right? because poorer humans usually account for the minority of all the pollution.
Dirt poor people heat and cook with coal or firewood. They burn down forests to plant food. They are sustained by long supply chains by well intentioned NGOs rather than local produce.
It's not simple to say rich people are polluters, and poor people are living naturally.
Although per capita, the middle class consumer may be the worst of them all.