The writing is not great. He repeats himself constantly. He uses certain words and phrases from his system as if he’s a saleman making a pitch. He loves to say “aperspectival madness”.
He makes a reasonable, if disjointed and poorly evidenced, critique of the failures of the “green” movement. (Again, this is not just “environmentalism”, but it includes elements of it.) He points out how greens set the stage for their own failure through political correctness and having no sense of humour.