The more nuanced version of the same comment would've been to point out that it's no co-oindence that rappers commonly choose an alter ego (not just a pseudonym, but a character with different mannerisms and traits) under which to perform. On top of that, Eminem used an alter-alter-ego, Slim Shady, for his most egregious lyrics, and conversely used his birth name to lend realism and humility to the songs that were (or alleged to be) honest about his real life details.