You forget that the earlier liturgy was simply abandoned by the reformers, even though many, perhaps a majority Catholics preferred it. Old habits die hard, like-long tastes, not easily changed. And in a hierarchial church, the reform minded among the lower clergy who did not abandon their calling were much taken with experimentation. This regardless of what the less up-to-date laity thought about the matter. Plus much great art was simply put away, for the new puritanism came from two directions: a preference for the banal or a liking for the grotestque.
I don’t care if people want to go to a Traditional Latin Mass as long as TPTB scrub all the anti-Semitism out of the Latin missal. However, many TLM types tend to be very self-righteous in their beliefs. Theirs is the only Mass that is valid despite the fact that the new post Vatican II is also licit. I think that the prime example of this is the feet washing non-controversy. The Pharisees-R-Us wing of the Church spent time screaming about how this would lead to lady priests and missed the entire point of the Pope’s lesson.
I’m fine with them having their Mass as long as they don’t act as long as they aren’t scolds to the rest of us.