"Environmentalism" to most people is just posting about the bees so they don't have to mow their lawns (muh pollinators) and being mad about oil because all the people who they knew who work there are filthy redneck republicans.

Much like atheism is just "I don't like the church because my dad made me go and I like to sleep in," its just a lot of rage at badthinkers and laziness masquerading as activism to give it power. The vast majority of them have not thought a dime about any part of it outside maybe a single hobby focus.