> Ask people on the street to actually name a Kanye West song and most of them struggle

I think Kanye may be a terrible example for your point since people tend to listen to his music for the lyrics, which are often well crafted. Your point makes more sense for mass produced pop music where the lyrics for almost every major song are written by ~6 different groups. In that case most of the lyrics tend to have similar tone and themes and so it matters much less who is singing them.