I had a friend tell me they liked the massacre of "right round" because the beat was so original. I told them it's origin, and they told me I was wrong.
._.
But I am in a love/hate relationship with your argument.
Since no one at my school besides me has any taste in any mainstream musc released before 1995, I like to think that these artists, although they are shamelessly borrowing beats, allow for my friends with "different" music tastes to enjoy the melodies I know, even if they make me want to break their iPods.