Yes. Nearly 10 years of consistency - she's always experimenting with different sounds, she has a big influence on the industry and not to mention her sales and stats
It's way too early. She turns 10 next year. She needs maybe 15+.
Also a lot people are on her level. She is not really leaving people in the dust with her performances abilities or records. Her direct competitors (Gaga, Katy,etc.) would have to fall way behind her.