African kids don't cause as much pollution as Europeans and Americans do. By orders of magnitude.
However yes in the long term we should not keep growing our world population as a whole. I do understand the need for Africans to have more kids though. For two reasons: A lot more of them die due to poor living conditions, and they serve as a "pension" for the parents.
Obviously these concerns will be solved by better living conditions.
>> Right now the absolute worst thing you can do for the environment is to have a child as an African. [0]
Because today's African babies are tomorrow's European migrants, who will bolster the ranks of the polluting global elite.
But we don't want to go here do we?
[0] https://en.wikipedia.org/wiki/List_of_sovereign_states_and_d...