As far I know, most rappers aren't even living that "hip hop" lifestyle that KRS invisions.
So where is hip hop?
I know more grafitti artists, dj's and b-boys living that "hip hop" lifestyle then the rapper (MC).
Maybe its just that most of rap and hip hop broke just like most of science and religion.
Now, Preppy Raver enjoys 50 cent and its probally because his lines are catchy. He is definitely a rapper but living this "Rich Afro- clubbed out Decadant Materialistic lifestyle."

In a sense, he is flamboyant and the people love that cause its somewhat rock star.
I personally think that 50 cent (including his bubblegum gangsta army) does feel what he writes. But in its entirely, he is junk food and lacks personal growth.