Wow, so many words to say so little. Jazzists forgot nothing, if anything they are usually the most classically trained musicians you can find. It bears nothing with your asinine tangent. Just like in art, avant garde jazz musicians and dadaist painters were usually the technical cream of the crop of their fields. If it is a matter of taste, leave it at that. But it has nothing to do with knowing music theory and prescriptivist notions of what music is or ought to be.