The idiots include the world “leaders”—the wealthy businessmen and the politicians they own—through bribes euphemistically called “donations.” Because these “leaders” (sic) are actually smart enough to understand they are destroying the habitability of the Earth and killing their own children and grandchildren and making their own wealth completely worthless.
And, along with an uninhabitable planet, they are also creating an enduring hated for them in any of their offspring who manage to survive.
These leaders are easily the biggest morons of all BECAUSE they are smart enough to know better yet make the stupidest possible decisions.