When the gorebull warming scam first started to really take off the movement was primarily led by politicians, activists, and closet marxists. They coopted a few scientists of questionable ability and a few that should have known better.
However, I don’t think it’s fair to state that the movement was led by scientists. This has been a closet marxists, anti-capitalists, crony capitalists, leftist-progressive, enviro-whacko movement from the beginning. The hypothesis was simply adopted by those who had an agenda and the “facts” were manipulated to push the agenda. I was a youngster when the big worry was the coming ice age but I have read that folks tried to coopt that scare for their own purposes as well.