I remember first becoming aware of him when he was part of Woody Herman's Herd in the 70s (he plays some nice solos on the 40th Anniversary recording).
I've met him several times and he is a gracious and humble gentleman. No jiveness whatsoever. He sat in with the Herman band on a Europe gig a few years ago and traded with Frank Tiberi on Giant Steps. And it was burnin'.
As I said, I don't like every single thing he's done, but he seems to me to be sincere and honest in all his projects.
Not sure what you're basing your opinion on, akanalog, but I think you might be writing him off a bit harshly. Your perception of him (as a person, not a player) seems to be based on speculation.