Yep “Back to the stone age to save the planet from humans”.
I would say some even to the point of eliminating the human species altogether.
Many of the truest of the Greens out there want to see all humankind eliminated - there's all kinds of documented proof of those sentiments. Modern post-modernist Marxists, however, don't give one half a lick about the planet. They just want power and will do anything to gain it.