"The music was new, black polished chrome
/ And came over the summer like liquid night
/ The DJ's took pills to stay awake
/ And play for seven day"Jim Morrison.
I always thought that song was prescient, considering the the "waves" of rock and roll in the following decades. Ideas emerged, often from the underground. Some were true, and they upended old, stale ideas that had descended into hack mimicry packaged and sold to the unwashed masses.
Novelty is a quality and it only lasts so long. Johnny Rotten's antics would be trite cliches by the 1980s, just as he himself had been disgusted by the trite homages to Jim Morrison of the last 70s. Authenticity, originality and rebellion don't generally follow clearly signposted roads.
Movements have cycles. In retrospect, Mike Oldfield didn't really suck... but Johnny was right at the time.