I think the people who are saying jazz has to sound a particular way, or "what you're doing isn't jazz," are just scared because they can't do it. A lot of them just aren't talented enough to do anything new, honestly. It's the people who are talented enough and who have the open mind and who are forward-thinkers are the ones who are doing something new. You tend to hate on what you can't produce.
Robert GlasperJazz stopped being creative in the early '80s. After your acoustic era, where you had the likes of the Miles Davis Quintet, when it gets to the '70s it started being jazz fusion where you had more electronic stuff happening, then in the '80s they started trying to bring back the acoustic stuff, like Branford Marsalis and the Wynton Marsalis & Eric Clapton sextet. It started dying down from there. Miles was still around in the '80s and he was still being creative; he was playing Michael Jackson songs and changing sounds, but a lot of people were still trying to regurgitate the old stuff.
Robert GlasperEverybody's not going to like jazz, let's just be honest about it. Everybody doesn't like everything. There's a disconnect in generations and some people just aren't going to feel that music.
Robert Glasper