There are nearly 8 billion people on the Earth. The evil capitalists supply them with what they need to live. If you want to save the Earth from climate change; large scale nuclear war will take care of it. Kill off 7 billion people and create nuclear winter.
Sparring is that, a communist eutopia would still have to produce and distribute all that stuff to support that population.
How other than the death of billions of people do we end the need to do the things that produce greenhouse gas? It’s all warm and fuzzy to blame evil corporations but seriously, how do you do it without radical depopulation?