There’s whole YouTube channels devoted to nothing but the reactions of people listening to great rock for the first time. The twenty-somethings at work all prefer 70’s rock. The Stones were absolutely great rock back in the day, but have been a nightclub act on life support for several decades already. So don’t conflate the death of rock, which is alive and well, with the health of Mick Jagger, who long ago decided he'd be better off with a retirement annuity than a band.