You're being confused by the numbers. We aren't trying to maximise consumer spending, the point is to maximise living standards. If the market equilibrium price of all goods was $0 consumer spending would be $0 and living standards would be off the charts. It'd be a great outcome.
It just happens that up to this point there have been things that couldn't be done by capital. Now we're entering a world where there isn't such a thing and it is unclear what that implies for the job market. But people not having jobs is hardly a bad thing as long as it isn't forced by stupid policy, ideally nobody has to work.
In theory. In reality, how are the benefits of all this efficiency going to be distributed to the people who aren't working? I sure don't see any calls for higher taxes and more wealth redistribution.
Given the current mechanics evident in the society - declining education, healthcare and rising cost of living, homelessness and exploding economic inequality - who is "we", trying to maximise living standards, and what movement do you see leading towards such an outcome?
It just happens that up to this point there have been things that couldn't be done by capital. Now we're entering a world where there isn't such a thing and it is unclear what that implies for the job market. But people not having jobs is hardly a bad thing as long as it isn't forced by stupid policy, ideally nobody has to work.