You could say this about any pov that discourages any behavior: "Dead people don't murder, and so the movement to stop murder can be traced directly to Neomalthusian and eugenicists."

It's obnoxious to exaggerate the perspective of people you disagree with, just to make them seem less reasonable. Those who want people to decrease their carbon footprint don't want you dead, they just want people to decrease their carbon footprint.