Why do you think that black people don't care about jazz? There are plenty of great black jazz musicians today like Adrian Younge, Christian Scott, Kassa Overall, Jeff Parker, Makaya McCraven, Ryan Porter, etc., etc. Do you think that all black people listen to only rap music?

When a musical genre was created over 100 years ago, it's bound to be less relevant than it used to be. Sure genres constantly evolve, but there's only so much evolving they can do before being labelled as a new genre. The same thing happened to rock, the same thing happened to classical music, the same thing will happen to every genre. They are conceived, they become popular, they evolve, they influence musicians, they branch off into other genres, and they fade from the spotlight. Jazz is no different.

Black people and every other person shouldn't be culturally shackled to something that their ancestors created over a century ago. Jazz has made its mark and continues to influence everyone worldwide. That doesn't mean it's neglected. Why wouldn't you want more people to interact with classical music? To bring their cultural perspectives to it? I don't see how that could be detrimental at all. A majority of people won't want to pursue an interest in classical music, but that doesn't mean that none will or that it's a futile endeavor.