There is no over population problem in many of the worlds countries. (In some especially in the EU it's the opposite).
Some of the statistically overpopulated countries work okay with it (e.g. Singapore, Japan).
Most of the "problem causing" over population is in Asia and parts of the middle east. (Which doesn't mean they cause problems for others, but there are overpopulated countries which have "some" problems cooping with it.)
So why should any regulation affecting mostly Western states at all matter wrt. over population?
Some of the statistically overpopulated countries work okay with it (e.g. Singapore, Japan).
Most of the "problem causing" over population is in Asia and parts of the middle east. (Which doesn't mean they cause problems for others, but there are overpopulated countries which have "some" problems cooping with it.)
So why should any regulation affecting mostly Western states at all matter wrt. over population?