The author missed another key reason for the AGW scam.
With the alleged fall of communism (which didn’t go anywhere except to the White House), the global elite needed another control device to scare the crap out of an uninformed and gullible population so they would willingly and gratefully surrender more of their God given rights to the state for “saving them.”
Orwell wrote a book about it called “1984.” He just had the date wrong. And it damn near worked.