It seems that it started long before. As some posters and I noted, we occasionally listened to him, in the beginning, while on radio only.
Then fame set in, and he has since been cheered on by sheeple who blindly nod at his every word. Some sort of positive reinforcement, I suppose.
Fame corrupts, and Beck is no exception. He and his followers tell themselves that he has a mission of revealing truth...as they see it.., but what is really happening is some sort of preaching to the choir, stirring the pot, agitating...
Of course, unless he/they are calling for physical unrest, its their right to speak/listen as they wish, and, not being a journalist, Beck isn't obligated to adhere to facts.
Does that sum it up?