Q. Who led the Pedants' Revolt?
A. Which Tyler.
I can't help thinking that I am that Which.
The clue: "Dullness of old rocker - this person's gagging for the nobs! (6)". The answer "Tedium". My parsing has "Ted" as "old rocker", "I'm," this person, the setter", gagging for the nobs "U", "Tedium" being the definition.
But, Teds were not rockers. They pre-dated rock 'n 'roll by five years or so. Teds danced to different music: big bands. In the early 50s, Teds at the Hammersmith Palais in London, where they first appeared, were fans of the Ted Heath Orchestra. "The Creep" was the first Teddy Boy hit , followed by "Hot Toddy" and others.
"Ted" reputedly comes from "Edwardian", being the style of dress affected. It was said that these young working class lads were merely aping the walking out dress of Guards' officers. I don't believe it.
Later, younger lads and lasses may have embraced rock 'n' roll , but it was "young tearaways" who tore up cinema seats when "Rock Around The Clock" was shown, not Teds.
"Rockers" were a different species.
At all events, what must young puzzlers and tyro crossword-puzzlers make of the continuing occurrence of "Ted" in clues? Time to confine it to history?