In case you didn't know, making movies doesn't come cheap.
given the movie you've highlighted would appeal only to a handful of fringe-dwelling knuckle-dragging deniers, it's reasonable to assume it's a loss maker, as anyone could see it would be.
so who is funding it?
my guess is that it would be those who had the most to lose from change, in this case coal, oil and gas producers.
they're always desperate to fund industry bs, brainwashing and propaganda.