But it isn't decoupled.
There are people whose work directly enables your survival, and that of everyone else's around you, as well as their own.
Food production, mining, logging, maintenance of infrastructure, just to stay basic.
These people need to be compensated too, and they can't just opt out. Cause if enough of them do, or if the ones who don't are just not performing well enough, everyone is fucked.
This fixation that we don't need to work to live is moronic, just because your job is not essential doesn't mean no job is.
At its most basic level work is about portioning scarcity. You work to be assigned a smaller amount of the hardship pie on your society. Thankfully western society has a very small pie to dole out, comparatively.