you are forgetting the elephant in the room: Earth's carry capacity... it's about 1 bln people and we are 7 bln in excess.

https://dothemath.ucsd.edu/2013/09/the-real-population-problem/

I always like to keep an open mind. Siegel puts some interesting arguments forward for which I have never heard any counter.

https://www.youtube.com/watch?v=76Ln3Ou6jnc

But even if co2's role is perhaps different than we think, the hard fact is that we will be running out of cheap and abundant fuels anyhow. Same as many other critical materials. The effects on the system, if we don't prepare now, will be devastating.