Do you have everything you want in life? I don't just mean, "do you have everything you want of what you could purchase with money today?" I mean everything you could want.
Articles like this one make me feel like there isn't a lot left to do in the world - that we're close to stopping our progress toward better living standards. If we are stopping or slowing our progress toward higher living standards, then yes efficiencies do kill jobs.
I don't see a jobless future. I see a future with a different mix of jobs. To be fair, the author does touch upon this a little as s/he is encouraging investment toward new industries. However, I don't share the author's sense that these new industries and new economies will definitionally employ fewer people. Automation and efficiencies have been seen since the industrial revolution. Two centuries in, all this automation doesn't seem to have driven unemployment to a skyward trend over the long run.
If we were pursuing a finite goal, greater efficiency would mean that we would need less labor. However, I don't believe that our quest for better lives is a finite goal. People are always talking about things they wished existed or things they wished they had. That sounds shallow, but I don't just mean commodities; I also mean medical treatments. As labor becomes freed from current tasks, it can be put toward other uses.
That doesn't mean it will be easy, but I think we're going to continue raising our standard of living and creating a better world. And that will require labor.