Plus, that's one song. What about the songs about taking pills; about killing people? Rap is full of that, and even if Emenim has a few supposedly positive songs, it doesn't change that most of the genre is full of crap. Not only that, but it is not just the message but the general beat of rap that grates on me for some reason.
It is partially a matter of morality to me, but also one of simple personal taste.