Wouldn't this imply humans should already be working very little compared to pre industrial revolution? Instead it seems we work more [1]. And with less fulfilling work. I agree however that we have may have more stuff (or wealth).
So going by this projection, in the future we'll have even more stuff, and work even more in even less fulfilling work. That is, assuming the people who control the AI/robots are willing to share the wealth generated.
[1]: https://groups.csail.mit.edu/mac/users/rauch/worktime/hours_...