Prince episode

First, I thought it was great that they did a tribute to Prince. Yes, I know it is a show, but, (1) how the heck did the twins not know of Prince. my kids live in a super white town and they know who Prince is. I mean, just by accident you will hear Prince on the radio at least 1x per week. if the Johnson's were so into Prince, his music would have been played at parties, etc. when he died they would have been discussing him and playing his music. (2) Jack didn't know Prince, but he knew Sinead O'Connor? (3) It is always funny how they make Dre's co-workers overly white, but not knowing Prince? Funny yes (I answered my own question).