My own teenagers didn't seem as 'in to' a particular type of music as I did as a teenager.
It's more than nostalgia-- you are correct in your ponderings, it seems.
Yes, music is now a disposable 'thing', it's only entertainment, not an art form, not something that 'kids' can identify with or latch onto. It's about dancers, production (and not 'musical production!) idiotic non lyrics,
no chords or solos and, very often a 2 bar loop, repeated endlessly. No talent hacks, who have never played one actual gig, are promoted on TV as , not even singers or artists, but, (gag me!) " Idols" !!? Sad.....
Other way around
I think there was no impact and fill that gap they made a new impact
Yes. <br />
But with the proliferation of alternate media forms the youth are not grouped into as large factions as before because the number of music forms and groups is much greater. In the 60's most youth listened to mega groups like the beetles. But today there are no real mega groups but many different groups.