I'm ex-Navy nuke and spent my career as civilian Rx eng. I agree that they'd find something to complain about. Try bicycling. I ride a recumbent.
To bicycle, one has to eat, and eating produces methane emissions. As We All Know, methane is a Greenhouse GasTM...
Yeah, the watermelons won't stop complaining until humanity is extingushed. They give conservationists like me a bad name.