Earlier quoted context omitted.
I’d say productivity is more of a currency than labor. Sisyphus isn’t producing anything, but sure is laboring a lot. The industrial revolution was huge, not because it had a lot of laborers but because the laborers were able to be more productive with their labor.
Fair enough, but no productivity improvement can make up for too few workers producing goods and services for those who might want them…yet!
We've gotten to a point where capitalism in it's current incarnation motivates a decrease in efficiency, which we call rent-seeking. it's maximise the dollars per productivity rather than maximise productivity.
It's not like people would do nothing without work, either. We've had periods of history where there was more time and more resources than there was work to be done, and it caused explosions of fields like art and science, both of which are stagnating under the current paradigm (relative to the capabilities we have as a species * population)