The left has moved far more than the right has. They're blinded by how far they've gone.
Talk about the pot calling the kettle black....
To be excessively personal, one of the things that makes me think one of my college age sons is intellectually immature is his affection for Michael Moore's books. Moore exagerrates, lies, and substitutes innuendo for fact. He's a master manipulator and propagandist.
That being said, there are plenty of commentators, authors, media personalities etc. on the right who thrive in a similar way.
Both sides have people and constituencies who are blinded by how far they have gone.
The only thing that separates Moore out from any of the authors and commentators on either side who function in a similar fashion is that Moore has the ability to get movies made. And for good or for ill, after this one, he is going to be able to make more.
As for the money he makes, more power to him. I don't like the way he makes it, but going from being editor of a free weekly in Flint to a movie producer took some doing.