To be fair, "quiet quitting" is a labour action that goes back decades if not centuries. A more common name is "work(ing) to rule".

I remember that term from when my teachers were preparing to strike a long while ago. The fact is, most workers, teachers especially, go beyond the bare minimums that their jobs require. It made a big difference when teachers who used to supervise after-school activities just went home instead. In jobs that are associated with "vocational awe", it's very common for people to do much more than the minimum requirements for their jobs, so when they engage in a "work to rule" campaign, there's a really big difference.