It is, because the latter is worse. Being a major cause of climate change does not only affect humanity, but future generations and all life on Earth as well.

It is, because the latter is worse. Being a major cause of climate change does not only affect humanity, but future generations and all life on Earth as well. It is an order of magnitude worse than genocide. When a single entity is responsible for it, because of negligence or malice, the punishment should be more draconian than if it "only" caused harm to humanity.