Yes he is. Glenn Beck is first and foremost, a Radio Man, and second a Radio Journalist. Yes, I know he is now blowing up on TV, but if you know anything about him, you know that growing up all he wanted to do was be on the RADIO and that Radio has been the model he has used to build his career since he sobered up.
The collecting, writing, editing, and presenting of news or news articles in newspapers and magazines and in radio and television broadcasts.
Well, yes, it's hard not to see Beck as a journalist, the same as these other guys. But I will add this portion of the definition:
The style of writing characteristic of material in newspapers and magazines, consisting of direct presentation of facts or occurrences with little attempt at analysis or interpretation.
And object to it with Glenn specifically in mind -- he does not comport with the "little attempt at analysis or interpretation" portion, while most journalists leave the facts/story up to the interpretation of the reader/listener, Glenn does puts a good bit of work into his commentary.
But I will stand corrected.