John strikes me as a very serious musician who wants to stretch out creatively.  I don't know the man, but I would guess "career move" isn't a phrase in his vocablulary.  I imagine he's grateful for the success he's had, mostly because it gives him the freedom to try new things.\n\nNot every artist's goal in life is to be a superstar idolized by millions of fans.  Sometimes it's just enough to be able to perform what you want the way you want and have someone respond to it.