There's also the third branch of anti-capitalism-first, who only care about ecology insofar as they can use it as an excuse to get on their soapbox. I'm really not trying to be sardonic, but there certainly is a tribe of green activists who demonstrably have no actual interest in the environment, just in insisting that the only solution to any problem is economic revolution - sometimes to the extent of actively sneering at and opposing practical, immediate measures to improve the situation (and green politics is not the only movement where they do this)