Yes, I think you are right -- not sure about before that with respect to the saxophonists we're talking about. I agree with you to an extent about Free & Tristano, bu there are so many ways to play free that don't intersect with him & his ideas directly, it becomes a bit of an analytical shell game.
Musica Elettronica Viva had a piece called "Chinese Food" but it wasn't necessarily take-out from Confucius, y'know?