Profit maximization is the goal behind automation.
We'd need to see changes in human nature or society to ensure that misplaced labor can still have a quality of life if idle, because profit optimization says you won't see a cent if I don't have to give it to you.
Even accepting your premise (which I'm not sure that I do), that still doesn't disprove my point. When farm workers went into factories, we got a bunch of stuff like cars, dishwashers, and refrigerators. That means that I can go to the store less often, and I don't have to walk there when I go, and I don't have to wash the dishes myself each night. We gained a bunch of idleness from that - but we couldn't have done so without moving people from farms to factories.
We'd need to see changes in human nature or society to ensure that misplaced labor can still have a quality of life if idle, because profit optimization says you won't see a cent if I don't have to give it to you.