I think that Bob is the most important popular musician of at least the last 40 years. Yes, he can Rock with the best of them, to say he stopped doing it in '67 only means that you haven't heard Love and Theft, Oh Mercy, The Bootleg Series, Infidels and many others. Songs like Political World, Everything is Broken, Seven Days, Tweedle Dee & Tweedle Dum, Dirt Road Blues, Summer Days, Honest With Me etc. This ain't Folk Rock baby, it's the real deal.Having said that I think that Bob's greatest contribution to music is that he forced others to write songs that say something. He is so rooted in Rock, Folk, Blues, and traditional music that he draws on any and all of these styles when creating fresh sounds.
The scope of his work continues to amaze me.
But I'm not crowning him King of Rock, I think it would minimize his contributions to so many other styles.