In the end, three schemers peddled this schema to the world independent od any science or even a consensus. The rest they fabricated.
I knew of the invidious involvement of one Maurice Strong a long time ago and close to the meme popping up in the media. That someone could be both purportedly self made and a communist never made sense to me. That he was head of Power Corp as well was odd. His whole career begged questions. And he was not rich as in super rich and even that could crumble under scrutiny.
In the event he has passed from the scene three years ago and that coincides with the lack of clear leadership in the whole climate change meme. It is slowly coasting into its natural death.