Let’s do a little thought experiment. Let’s say the government decides to listen to the world’s climate scientists and begins to aggressively pursue policies designed to reduce the amount of CO2 produced each year. And, let’s say that, by the end of the century, we find out that the climate scientists were completely wrong. What would be the downsides? Cleaner air, cleaner water, perhaps the end of starvation as we learn to feed ourselves more efficiently and sustainably? Doesn’t seem to be a bad outcome to me.
However, let’s say that the government continues to listen to the deniers, and continues with business as usual. And let’s say that the climate scientists were correct, after all. What would be the downsides? Mass extinction of a significant portion of the biosphere, unimaginable misery, and the death of literally billions of people.
So, who would you rather back, even if they are wrong?