you only have to look at the musically inept "Black Eyed Peas" as a prime example. They can't make music and they are horrible live...
I wouldn't know, but for me they are (just like the Gaga) radio-music. Stuff that I will turn the volume up when I hear while snailing along the Autobahn (read when music ist just background entertainment.
I would never ever buy a record by them and when I really ! listen ! to music I tend to get somewhat away from the mainstream (sometimes only a little bit sometimes right into the land of the bizzare).
*disclaimer I don't like the black eyed peas.
Who would have thought .....