Because there's no platform or ideology on earth capable of paid advocacy besides the oil industry, and certainly no political movements ostensibly grounded in "green" advocacy.
Who has deeper pockets and more to loose if anthropogenic climate change is real and caused by co2 emissions? If you truly think it’s the folks that are cutting grant checks to climate scientists, I have a bridge to sell you.
My brother in Christ, re-examine your priors.
My brother in Christ, re-evaluate your thorazine dosage.