All arguments based on the need to limit population growth depend on the notion that resources are finite.
Most social policies that have been developed by the left in the past 40 years have served to restrict access to resources.
Direct reduction of populations is therefor unnecessary to accomplich the fundamental goal.
This argument has made me think about the asteroid scenario. Or the pandemic scenario? What if we need to get our population up to some critical starting point, so that when the virus comes and wipes out 99.999% of us, there are enough left to populate the planet and start over?