Poetry is where it's at - there's no doubt about it. Forget plot, narrative and all the other stuff. The big deal about poetry is that it's clear that the reader - you - are getting something from another human being. First hand. No flannel. It's communication on a personal level. Perhaps this was what Kelman meant when he tossed detectives and wizards into the mix. Perhaps this is something all writers should be striving towards - to put a bit of the personal into their writing - a bit of poetry. Even writers who use plot, narrative and all the other stuff.
I agree with him.