I don't think this adds much to the discussion, because yeah there's a certain conception on what kind of sounds and rhythms are "music" and which aren't and if you grew up in a white dominated landscape then you're probably not going to be very receptive to rap which unlike rock or jazz music has remained a genre mostly dominated by black people. Probably because music taps in some primitive areas of our brain around communication and identity, more than just being a purely sensorial experience, people feel a sense of identity and belonging towards certain music.

But this isn't new or anything, people just weren't very receptive to Stravinsky's Rite of Spring back in the day. The difference is due to the way music is marketed towards certain segments, and due to technological breakthrough drastically changing access to music, the "generational" divide is very obvious, I guess it'll be interesting to find out if that gap will be less drastic in the future now that at least two "generations", millenials and zoomers, have been consuming music in the exact same way.