Jafant asks:
****Over what subject matter?****
Jazz; or, more specifically, the idea that the music that Metheny and (late) Miles played was not jazz.
****Why?****
Its actually quite simple. In the case of Miles, because it was Miles who first criticized the young Wynton, who was being touted as the next big thing, because (and to quote Miles) "he ain't saying shit". It is only human nature that there would be some resentment there on the part of Wynton. Obviously, I can't get inside Wynton's head, but I do agree with the assessment of many in the jazz community that Wynton's rep as an important jazz PLAYER was seriously overstated. This has been commented on many times here and certainly elsewhere. Wynton is a force of nature as virtuoso trumpet player, champion of jazz and its roots, jazz educator, and more; all of that is undeniable and he deserves tremendous credit. However, in my opinion and that of many, Miles was right; he just doesn't have "the thing". His jazz is impressive for what he can do with a trumpet, not for his ability to tell a story when he improvises. He has built an empire around the "preservation" of traditional jazz. I believe he is totally sincere; but, as with the rare well meaning politician, the lines get blurred and it's only natural to fall into the trap of condemning what does not fit his formula.
****Coming from Wynton, it cannot be ignored.****
Of course it can be. It usually isn't ignored; however, not being ignored doesn't necessarily mean being correct.