Whether you believe in Climate Science or not, it’s still nice to have clean air and drinking water. You want real world evidence of the dangers of coal? Look at Beijing. They’ve become world leaders in clean energy and decarbonization not because global warming is a “Chinese hoax” but because their citizens demanded clean air and water, much like Americans did not so long ago, leading to the the decline of coal starting in the 1980's, way before Climate Science was in the headlines.
Also, from a purely economic free market standpoint, the world isn’t buying America’s amazing polluting coal-powered technologies. You want more American manufacturing and exports? Make something the world actually wants. Clean energy tech seems to be the next big thing.