Modern singers don't play any instruments, they don't write their own songs, and they have no control over the production of their albums.
The result is the "pop" culture of music: dispensable singers. The music industry churns them out, mostly alike. Their songs are carefully shaded so that a certain record label has a singer for every possible demographic. Their chief appealing feature is their novelty; whenever that wears out, there's a "new" singer waiting in the wings to take over.
You don't see "Britneymania" sweeping the free world, and that's for a good reason: there's nothing about Britney to distinguish her from any other so called "singer", except that she's currently the most popular.