Modern houses 10 to 20 years old usually have them, some owners add them later, but there’s still a lot of heating done with oil and gas… and also the heat pumps are often built for heating and not cooling. Often there are no good options for cooling even though better tech than the shitty monoblock ACs would exist.
Solarpunk is an utopia. If every step we continue making needs to be perfect, we’ll never get there. Instead we have to improve each step we make to get there.
Solarpunk is also about salvaging technology and post-capitalism. It’s supposed to be reached through a transition period. We just gotta make the first steps and introduce more circular economies. This will phase out most harmful mining practices eventually.
Also when you travel in central or south America you see more and more infrastructure by the Chinese. Still a lot less than Africa, but China is taking investments into ressource rich countries seriously.
I think the CO2 thing is actually the case to a certain extent, but these are usually lab results where all other variables are controlled. So obviously in real life an imbalance in climate is a net negative.
It’s similar to the claim having more humidity in the atmosphere (because of the heat) is great because you’ll get more rain, but in reality you end up getting record flooding events, land slides and avalanches.