truebut the point is that, the majority of those people that have the capacity to comprehend and enjoy more complex music, will do so.
Have you taken some sort of sample to prove this. Most intelligent people, especially in America, do not listen to classical music - from my experience.
Honestly, I think you can make that claim objectively. Technical and theoretical aspects can be quantified and as such, the claim that one piece or style is technically more advanced or 'better' is semi valid.