I don’t know, thinking of poetry, I wonder if maybe this wasn’t a great idea, and here is why. Poetry doesn’t stand in a vacuum, it isn’t a construct of academia, it isn’t a rule based form (well, can be, for example Haiku, though Haiku has rules in structure it doesn’t in meaning or content), it is a way to express ideas and thoughts in a unique way, it is also designed to touch people.
I was thinking about that the other day, about Frost’s poem about the road less traveled (not the popular myth of a meaning,that the road less traveled is the better one, but the real one, people’s ability to rationalize their decisions and remember themselves has taking the road less travelled and it being the best one, no matter what they chose), that had a big impact on me when I understood what he was saying. (For the record, my favorite poet was Archie the Cockroach of Archie and Mehitabel fame).
Look at it in that light, then how many people did Dylan touch? We aren’t talking routine music, that Jimmy Buffet reduced down to “let’s get drunk and S**” along with other themes, much of his lyrics were about trying to express ideas and create thought and maybe change (I know, Dylan says he only was writing songs to sing, he wasn’t out to change the world, etc…believe that like when he says he still gets death threats for going electric at Newport in '65 *lol). If he touched so many people, if hearing those lyrics touched them, maybe made them think, then maybe he does deserve the award.
Is it the best poetry? Depends on how you define it, is it something an English lit professor would glow over the perfect structure or a critic could dissect down to nothingness, maybe not, but if something touched so many people for so long, maybe it should be, as a body of work few people have what Dylan did IMO. Problem with ‘literary’ poets is they may be great, but like the old thing about whether a tree in the forest makes a sound when it falls if no one hears it, if few people ever read the poem and are touched by it, is it really great in the sense that it did something for people ? (I am only putting that out as my viewpoint, thoughts, not that I am right, wrong or indifferent).