Almost like the root cause of one of them is maybe the other one… Nah couldn’t be.

I fail to see how private means of production and exchanging goods for currency in a market economy is the cause of Climate Change or how to create any other kind of system. Countries with publicly owned fossil fuel industries aren’t producing cleaner oil.

Isn’t it one less set of people at the top overconsuming? (Politicians v. Politicians & oil barons)

Yeah but the people at the top overconsume in every nation, and the more corrupt that nation the more they consume regardless of whether their flag is red or blue, meaning the problem comes from corruption not from the economic system. So either oppose every nation or oppose corruption, but when I see people talk about “destroying capitalism” on the fediverse it usually just boils down to them supporting autocracies.

I think the issue with capitalism and environmental degradation moreso comes from that fact that capitalism requires evermore resources for evermore economic growth.

No, that’s not a problem specific to capitalism.