To be fair there are numerous musicians out there writing music about things they know nothing about, it's all about record sales and people will buy music if they can relate to what the artist is saying. Kanye knows what his audience want and that is his act. If you look at the likes of the Arctic Monkeys, they sing about working class life in Sheffield, just being normal people. Okay the songs meant something to them when they wrote them and maybe still do at the minute but if they continue to sell records and make their millions the songs will just become their act because they will change with success. I'm probably not making much sense but what I'm trying to say is that the music industry is all an act; get people to relate to you and you'll sell records and that is why Kanye West is successful. Describing a tough up bringing in a rough area has become his act; but if people feel something when they listen to is does that make it such a bad thing? It may not ring true with him but plenty of people can relate to what his saying, who cares if he's been through it or not?!
Hmm I hope that makes sense!