They know it. They choose to use it to their advantage to control the narrative and scam more money from ignorant folks.......
Those perpetrating or participating in the AGW scam, ignore and hide the real climate data. Deniers and heretics are punished with extreme prejudice. Careers are destroyed and funding is denied to those who dare to question the orthodox consensus of man-made climate change.
Sadly, there's now a whole generation of 'scientists' who've been indoctrinated with this claptrap their whole lives.