He wrote the show...His wife/gf/child's mother in white though, so I don't think it really matters that he was paid to recite a script that "shytted on white people" when his real life doesn't reflect that at all.
Why should his life reflect a make believe show?
That would be like people judging arnold schwarzenegger for not being an actual cyborg in real life sent back in time to save humanity.
Being "real" as a rapper is not comparable to being an actor or creative writer.