This is good news actually, while you have less jobs, hopefully new ones are created, people in the future don't have the option to work slave like jobs.
I see this thinking thrown around often, but I don't see how net new jobs would be created by efficiencies. Amazon wouldn't adopt robots if it created more employment overhead downstream. Sure, there will be robot maintainers, but not at a replacement level of the roles replaced. Companies adopt technologies because they reduce the net amount of human input (cost) required, right?
Well, the industrial revolution has been a story of continuous efficiency gains and increasing automation, but somehow there's still enough jobs.