I don't even give it credit for religious extremists. It's all a certain biased based, Polarizing news corporation, and their overpaid opinion muckrakers. People who watch it and actually like it (non-ironically) are more than welcome to it.
I still think people were too humorless about GCB. These are the same people that whine about Political correctness, yet they get the MOST upset out of any group out there when they feel they're offended. I love the logic of "Oh, you can make the villains Christian, but you refuse to make them Muslim?" Translated, "How come you say we're hateful? Make fun of people we hate instead!" Plus, I think our culture is trying to move away from those terrible propaganda cartoons of the 1940's. Does anyone actually like "Popeye slaps a [person of Japanese decent who was the product of a screwed up ruler at the time]?"
Eh... I didn't care much for GCB anyway. not my thing.