The lyrics mean what you want them to. Dylan detractors will detract, Dylan lovers will love… as a further comment I leave the above for pondering - or not. The late Geoffrey Hill, one of the great English poets, wrote the following:

‘ Accessible is a perfectly good word if applied to supermarket aisles, art galleries, polling stations and public lavatories, but it has no place in discussion of poetry and poetics. Human beings are difficult. We’re difficult to ourselves; we’re difficult to each other and we are mysteries to ourselves; we are mysteries to each other. One encounters in any ordinary day far more real difficulty than one confronts in the most “intellectual” piece of work. Why is it believed that poetry, prose, painting, music should be less than we are? Why does music, why does poetry have to address us in simplified terms, when, if such simplifications were applied to our own inner selves, we would find it demeaning?’