I can't say I've seen any evidence for it here (Vietnam) or with my Chinese colleagues. The slack channels are still active very late at night sometimes (e.g. midnight), and I'd classify most people in the workforce as 'hungry for opportunity' rather than 'looking to coast by'.

That being said, there's a surprising segment of the population that is not really part of the workforce. They're not 'rich' in terms of the amount of liquid capital they have onhand, but their family owns the home they live in, and they'd rather do odd jobs from home than go and build a career. They seem happy with their lives and I don't consider them foolish for making this choice! I think as the cost of living in the city slowly rises, this lifestyle will become unsustainable with time, and maybe quiet quitting may become a thing then.