Overpopulation is not the cause of global warming. Most carbon is produced through the endless consumption of the economies of Europe and the US. It is not from places with high populations.
These talking points must be fought whenever and wherever they arise.
Honestly I have to admit I am very apprehensive about nuclear energy in places like the US where environmental safety regulations are at best a suggestion. In countries with a stronger government authority and more direct control over it I’m sure it’s better, but even still they really need to take a hard look at hardening such facilities against the guaranteed climate disasters that will strike.