I see the eco-terrorist tag more and more abused for anything. I mean, if some organization plan to terrorize population, for example with bombs killing random citizens, that's matching terrorism for sure.
Otherwise that is raw propaganda.
Yeah, we don't speak enough of the existential dread people have of seeing someone throw paint on a building.
Sure but fear created by biosphere collapsing all around, massive human migrations, desertification and miscellaneous climate catastrophes are not things that mere terrorist groups can plot. :)