You think his fans are intelligent?
Are most rappers intelligent?
Of course he is intelligent. He is worth over 400 million dollars, and the face of some of the most successful advertising campaigns to date. Ciroc, Pepsi - etc. About 80 percent of his fans are suburban white kids. Most rappars are products of record companies, but the really intelligent ones have empires.
Yes, young kids are immature, but unless you think 16 year old Jenny from (insert middle - upperclass town) is an idiot, then no they're not dumb.
You can make fun of hip hop all day, but gen y is the soon going to be the largest spending force on earth, and they are hip hop fans. Fortune 500 companies went "hip hop" years ago, and they are reaping the benefits, now.