History is full of people making ridiculous claims like this. Years ago no one would have imagined that anyone would work in a society like ours, where extraordinary efficient agriculture means everyone can eat. But people still work, because things like better healthcare and iPhones have a cost.
Human wants will expand to fill humankind's greater productive output, just as it has in the past. So I do "get it." I just think you're wrong.
What is your proposed solution for when the market economy collapses due to demand side economics ceasing to exist?