Halving the emissions of the wealthiest 1% would have the same effect as eliminating the emissions from the poorest 50% of the population[1].

It's not a population problem. It's a consumption problem. The number of people consuming is only one variable of the equation, and it is neither the easiest, fastest, most attainable nor the most ethical one to adjust.

There are a lot of low hanging fruit we could tackle with willing policymakers, before depopulation has to be even considered.

[1] https://www.oxfam.org/en/press-releases/carbon-emissions-ric...