Rappers, rockers schlebs in general are people and they all talk kak and shouldn't be anyone's role model (unless you want to be a rapper, rocker or schleb that is).
Yeah, "role models" that don't think. Sure, that's exactly what everyone needs...
AFAIK he is saying that rappers just say what's on their mind and they are held up as role models.
This is a statement of fact and a reflection of society and reality, and possibly a warning not to take anything that comes out of his mouth as gospel, it is not a recommendation for how things should be or what everyone needs.
It is all subjective and I just think Kanye is one of those people we love to hate just like Justin Bieber.
Also expecting any American to have a good grasp of historical events that happened thousands of years ago in another country ... unrealistic expectations IMO.