Rappers shouldn't "stick in their lane" that's a ridiculous thing to say. You can be intellectual and be a rapper, Mos didn't conduct himself well but to generalize all rappers by Mos is just senseless.
That being said, is there a full version of the whole conversation?
Christopher Hitchens was a sell out and overrated intellectually anyway, he got RIPPED during the debate with George Galloway, Salman at least I can say is obviously intelligent, but if he was wiser he wouldn't have been so deliberately inciting in The Satanic Verses, whether artistic or not if he wasn't prepared for the consequences, and since he had the façade of becoming muslim after it would seem like he wasn't. Don't get me wrong though as I respect Salman.