Retired = no productive contribution
Everyone retired = production collapse
"Slave" part excluded because that is contribution without comp nsation which there fortunately is very little of.
A society where everyone is participating as consumers in a market - bit no one produce for - it is not plausible and will cause hyperinflation very fast. Super good for Bitcoin short-term yes, but on a societal level unustainable and the "slave jobs" would just be redistributed to those who don't have hard assets at best but real life sustaining value would be lost without any new input to the market.
So the premise is nonsensical.