Solange went on twitter rant about the subject last year:

As for me, on one hand, I'd hate to adopt the type of elitist thinking that dictates only certain "qualified" people should write about certain genres of music. I'd hate to think that someone with a genuine love of hip-hop shouldn't be allowed to express his views on the music simply because he didn't grow up in the hood immersed in the culture.
Then, on the other hand, we get flooded with shit like, "Macklemore is the only rapper with anything to say." And it's in those moments that I agree wholeheartedly with Solange and the author of the article you posted.
Been watching Hannibal and I'm waiting for orphan black to premiere.
The premier was tonight, sis.