Kanye belongs on your iPod, not in your Forbes opinion piece.
Certainly not mine. ;-)
> not in your Forbes opinion piece
It's an opinion. His opinion. And he's free to use whatever quotes he wants. The worst that can happen is that it shoos away those who cannot deal with something they don't like and cannot read the article past the part they don't like.
The rest of the article is pretty interesting (and I have met people who fit in all 3 examples).
The quote is directly relevant to the piece. It fits completely within the context of the article (personality vs. success).
I don't think something should be disallowed, just because it falls out of your narrow sphere of what's directly permissible.
Of course, I'm not the arbiter of social conventions but many times you ignore them at your own peril.
As an aside, if you are well known for breaking certain social conventions or are influential enough you can usually get away with it without much criticism. Nobody is going to scold Steve Jobs because he wears a black turtleneck to a board meeting instead of a suit.
(I ask, very specifically, because you said "rap lyrics" and not, e.g., "music with immature lyrics".)
The point is that in order to be credible to a wide audience, as this article was intended, you need to convey the correct 'tone' so to say. This a part of what is called in classical dialectic the 'ethos' of an argument. (to pre-empt, no, just 'logos' is not enough, and neither should it be - but that's a different argument).
So, in order to build up 'ethos', one needs to present oneself as a mature, mainstream person in the context of the subject under discussion. (yes, some people make a career out of breaking out of this, in order to appeal to a niche audience; see e.g. that ruby webserver blogger guy that gets linked here quite a lot, but that's not what the author in the article does or should be try to do, as far as I can tell).
Like it or not, rap and hip hop music are not mainstream to the traditional Forbes crowd. Partly because (most) rap artists build their careers on their anti-mainstream views, violent and promiscuous images, and cater specifically to an audience who finds one of the draws to the music in that anti-mainstream aspect of it.
So that's what makes it inappropriate in this context. For this author, in this context, to convey his message to as large an audience as possible, he should stick to 'accepted' style figures. And rap lyrics aren't part of that. It was a gamble I guess, and he lost, imo.
(Just to pre-empt another 'hey look at this country boy hating black music!', I bought hip hop LP's (yes, LP's) before Cypress Hill had put out 'Black Sunday' and mixed them on my sl 1200's when many of the readers here were still in diapers. I bought The Chronic a few days after it came out and once hitch hiked 400 kilometers to go to a concert of what was at the time the only crew rapping in Dutch. I'm no stranger to hip hop and rap, and yes I realize that people like Jay-Z have build big businesses on it. Still doesn't make the quote in this article appropriate.)