Exactly.
God loves souls. The devil hates souls. The devil wants to minimize the number of souls who love Him and love other people.
Though raised Catholic, the science fiction authors in the early 70s helped convert me to...well not atheism but definitely not Christian. Population Bomb (Erlich),Future Shock (Toffler), Arthur C. Clarke and science fiction helped me along the road to leave the Church. I was 12 or 13 when this started and it was fairly short lived but even a few years did damage.
That people suck this stuff up as adults saddens me. If you told them you could feed 5 billion people by irrigating the Sahara, for example, they’d rather see the desert remain in its ‘natural’ state and the people never be born or provided for. Gaia is their religion. I have a sibling like this.
These movements are never altruistic, they originate from hate and envy of the rest of the population. All the leftists I know are misanthropes though they pretend otherwise.