Yup. All of the pop stars that came out after 2005 are all lacking dancing skills (and to a lesser extent, stage presence).
Britney, Beyoncé, Christina, and Pink can all command a stage because they have an X Factor (
). I like Rihanna and Katy, but their extent comes from their appearance, and not so much what they can do on stage.
Only one I can imagine that holds a candle to the apex of a pop star would be Gaga, but even she has dwindled because she tries to do too much at once and it all gets lost in the process.