Fraud and extortion. They are threatening us with climate doom if we don’t give them huge amounts of money. These people belong in prison, or at the end of a rope.
The threat only works if you're frightened by the prospect of "climate doom." Personally, I'm fine with it. I hate the climate.
Lots of other people aren't falling for it, either ... see France, riots and burning ... but that may not prevent their taking the huge amounts of money.