Yeah also considering the article on Ars today about people testing whether ChatGPT poses no harm. I think singularity is coming but much differently than anticipated. So yes, the economy will have to change massively and less work hours are needed. (And the concepts are there: Negative Income tax, Universal basic income...) The change will be more graceful the less everybody is in denial.
As mentioned elsewhere this is not the first technological disruption in the economy. The change from heavy industry to a service industry didn't go well, hopefully it's possible to take learnings from this and do it right this time.