There have been media personalities in the past such as the infamous Father Coughlin, Gerald L.K.Smith, Joseph McCarthy and even Walter Winchell that have been given to demagoguery. Beck is just the end of the line. These guys have always been around and eventually forgotten just like the aforementioned.

They ultimately have nothing of consequence to contribute to the US and therefore are "sound and fury signifying nothing", except that because of these little media tyrants, people have lost their jobs.