So um, this dude probably has enough power to actually literally change the climate assuming he is half as strong as his dad?

This is the perfect lefty metaphor.

Make everyone else do stuff, you just protest and look virtuous and then do nothing to actually change the world.

And actually, their sign there is no planet B.... there literally is in the DC universe? like a LOT of planets?

I mean I remember reading the old Green Lanterns and Hal Jordan would fly to all sorts of different planets on practically a Lark they must have been about 5 feet from earth...