Yep. And a reversal would take some state peopled with such paragon of virtue with the will and force necessary to ensure compliance to virtue until such a point that it is naturally part of the culture again. Could be by force, could be through disincentive structures like cutting welfare, or incentive structures, could be over a short or long span of time, there's going to be a lot of pain either way. It'd be like making a guy with a decades long addiction to nicotine, alcohol, and opiods go cold turkey with all three simultaneously. (edit: And I don't think it's possible when the end goal for where culture should be is almost completely at odds with where it is. It's easier for a ship to turn several degrees than for it to turn 180 degrees)

OR, more likely, the current system with all its abundance giving people the leeway to live improperly with little risk to their own life and livelihood collapses and reality beats virtue back into everyone by sheer necessity.

We're essentially looking at the problem of how you rebuild a culture from the ground up and gl with that.