Yeah, but in the grand scheme of things it's nothing. A nuisance at best. If people really are worried about climate change, they need to stop trading with China, regulate big oil, invest in public infrastructure and transportation, heavily incentivize development and usage of clean energy sources, etc. Bitcoin is just a convenient distraction from the real problems. Regulating it will contribute virtually nothing to this cause.

At this point in time, there is no reason to care about this. Maybe we start caring if some insane development happens and BTC suddenly starts representing 10-20% of our energy consumption. Until then, there are bigger problems to worry about.