In a nutshell...that the root of much of it.
There are ideologues who believe it root and branch, too...and getting grants is a nice byproduct for them.
But scientists who see it for the hooey it is are attacked and driven out of the educational bastions that are fostering that crap.
So, most of them who disagree with it simply shut up to save their jobs.
A GREAT book that discusses this aspect a little bit is “Red Hot Lies: How Global Warming Alarmists Use Threats, Fraud, and Deception to Keep You Misinformed” by Christopher Horner.
Amen to all that. Us Horner still around? Seems like he used to be a regular guest on Hannity and was often referenced by Rush.