The climate is very complex, yes, that's right. Its complexity has no bearing on whether or not climate change is real or whether or not we can do anything about it. OP's central thesis, that because the Earth's climate has apparently changed slowly in the past (before an industrialised species existed on the planet), that we cannot possibly change it quickly now, really makes no sense at all.

And the OP's comically haughty attitude of "climate change deniers and believers are literally just as stupid as each other" is simply pathetic.

Also, points to you for bringing US monetary policy into a conversation on climate change... somehow.