Heavy industry is not driven by population, but it drives pollution
As I mentioned in my last rant, calling for depopulation of humanity is not smart. The impact of humans has not been due to the amount of humans, but rather, due ot the type of heavy industry that "they" have. And I say they because, although we all benefit from things of heavy industry indirectly, we don't, either directly nor indirectly, control the policies which regulate those industries.
Whenever something is changed for "environmental" reasons, when you dig deeper, there was really a business angle to it. It either saved money for a heavy industry leader, or made an upcoming competitor uncompetitive within a certain juristiction. The biggest change we can make, going forwards, is to dig deeper and build accurate models (even if they are complex -- we can build interactive complex models now with these artificial computer thingies), and use those models to guide progess.
But "we" cannot change it directly. Money talks here, so all we can do is walk alot. The three generation rule, where your kids have to work for the old guard, you might be able to live on savings, but your peers can't, and your grandkids are thus the old hope for humanity, applies here. It requires thinking big, and acting big, but on a geosocially compatible scale, which is there trans-nationalism and neo-nations (nations which are not based on the borders of existing nations) come in.
Think of it this way: if we had to support large populations with heavy industry, how could we do it without depending on pollution producing processes? If you think deeply enough about it, several possibilities will occur.
We can take some time to model them, and hope these grandkids pick them up... or hope to get an audience with someone in a position to implement them, or grow into a financial power that can actually implement them. Either way, those three (or more) stages are still there, the approach of protesting or calling for new laws won't work. It doesn't solve anything to establish rules that they will break anyhow, but if you look at the value chain, then something which works can be developed.
The depopulation agenda is just a red herring. Humans don't need "big factories" (or electricity) to live, but big factories need to be safe for humanity to operate, if we want to continue with a high standard of living, we have to make sure that heavy industry (and even the pace of work on an individual basis) benefits humanity more than it harms humanity.
That is the real issue, and the issue which nobody is talking about, because cash money both talks and buys the words of others.... but in a couple of generations, those massive factories may be just as abandoned as the megalithic pyramids, and that cash worth less than the paper it was printed on, because what was made to serve us now acts to kill us, whilst "they" tell us to just have less babies (or more babies, if you're Catholic or Muslim). No, less population is not the solution. Less lies is part of the solution.
We need better ethics in leadership of environmental impacting systems, because problems made in ignorance can be solved by application of wisdom, or made worse by covering them with lies.