The whole point is that those technologies don't save the workers time at all, because the time saved just gets filled up with more work. The business owners are the one who benefit from the increased productivity, not the workers.
The workers don't get more free time as a result of the technology. In many cases, they take a pay cut because the technology makes their job "easier" or "less skilled." So they still work 8 or more hours a day, and they still make barely enough to get by on (if they even make that much), while their boss only gets richer for their efforts.
This is the entire point that seems to be going over your head.
[Edit: "easier" and "less skilled" were in scare-quotes because they don't represent my personal point of view, but it's how the employers justify it. Thought that would be obvious.]