"The commodification of popularity over genuine artistic ability. The confusion between lots of other people liking something and that thing being worthy of being liked."
This is not new, as you probably know. Goes back to the dawn of the professionalization of everything. As with pro sports, so pro "music," there are only a small number of slots in the big-money industry for "celebrity" status and so lots and lots of very talented musicians will never make it out of living in their van crashing on friends' couches regional touring (if they even get that far), despite having as much or far more talent and heart than many of the "celebrities." The good news is that quality local and regional music in many genres carries on regardless, including fans that travel long distances to shows - and crash on their friends' couches or sleep in their vans to do so, because that's the economic level of non-celebrity musicianship for the most part. But at least it shows that the commodification and professionalization of musical performance into "celebrity" packaging will not kill the musical expressions and appreciations of humanity in general.
Also, at least some 15 year olds are listening to The Kinks (as just one example) and think they're great and say things like "you had the best music!" and "music nowadays mostly sucks!" to people 40+ years older.