the problem there is it requires a power base to enforce - and all the power bases seemed determined to drive off the cliff (some are tapping the brakes but the rest are full throttle and rolling coal for lulz) at one speed or another - and a military industrial complex large enough to be strategically effective would be (like the US army) one of the largest polluters in the world.

I want something to change, I just don't see ecofascism ( a really bad term btw ) as a possible avenue.

Victor Von Doom levels of resources/soverign agency might be able to. I think us humans are going to be a sad end note in some other species' extraterrestrial archeology, after so many of them run into our radio and other emissions.