This is sort of the norm across the country...I've heard some real awful ones during my travels over the last year.  I still would rate the Nat's team as the worst I've heard. It seems after the old school guys move on, its starts to be an entertainment business as the art of painting a picture for the viewer is a lost art. 

The desired TV demographic is more concerned with not being bored so make it interesting to them by entertaining them in a TMZ like fashion. Especially in non-baseball rich towns this seems to be the case. I do find the radio guys here pretty good, so that's always an alternative with the TV sound off.