All sorts of climate scientists have been telling us to cut emissions since the 1970s.

Saying "cut emissions" just doesn't cut it. They've been saying cut emissions for 50 years, yet emissions have only increased.

The problem with liberal scientists is not that they do not understand the science behind climate change, but they don’t understand the politics behind it.

Then they have no business writing open letters to politicians. You seem to think I disagree with the overall idea of global warming/climate change. I don't, I have trouble with scientists who write end of the world predictions with their right hand and passing the collection box with their left. How is that not considered grifting?

Just because what they're saying might be truthful, doesn't mean that they are telling the truth. Nobody is denying the climate is changing and it is getting warmer, but I don't think their doomsday predictions are true. Not even predictions, but "medium confidence in climate not collapsing".