We don't have a productivity problem when viewed through a human lens, rather than the absurd idea there must always be "growth".
We have a problem that that excess productivity has been captured by those who already have amassed wealth, to grow it even further.
Our massive productivity gains have been eaten up by the billionaire/owner class.
Does no one seem to remember that you used to be able to support a family of 5 on one modest income?
Now people can barely support a couple of 2 with two fairly good incomes.
The problem is inequality and ever increasing wealth of the rich, who then use that outsized influence over legislation and regulation so that they can amass even more.
We have a capitalism problem where our excess value is being stolen.
This idea that we need to fix our productivity is a strawman in my opinion.