Would be interesting to see him play (Or try, if that's the case) in a more "conventional" way. He may very well just not be able, so he does this type of thing.
Guess if that's the case, he just working within his limitations. S'pose if he's happy with it, no harm....plus, the guy has a great ablilty to generate some darn funny comments.
It is interesting to see the evolution of some avant garde types. Was painting a room yesterday. In the background played Miles Davis "Kind of Blue" album, then a CD of his way more out there stuff.