Interesting observation by Schubert. Rap/hip hop strikes me as much closer in spirit to 1950s Rock n Roll than most other contemporary music. On the whole, it's been significantly more counter-culture than most other pop music forms that have come and gone since then. Like the message or not, at least it has something to say. Rock music has produced a fair number of virtuoso players over the decades, but you can argue that that sort of misses the point. None of this music need necessarily be about technical competence.
However, little hip hop resonates with me. While that doubtless says more about me as a listener than it does about the music, it also speaks to an earlier argument made in this thread:. As we get older, we listen differently. Some have suggested that we listen with a more discerning ear, but it's also likely that we listen with a less open mind - and I plead guilty to that, as well.