Sigh. It doesn't matter. People have this bizarre conception of the economy as an exact lock-fit between jobs and work that needs doing, and they have a hard time imagining changes to that fit, even though throughout human history there has been constant change. In truth there is a nearly infinite amount of work that needs doing. We just get by with most of the work not being done. Just go back in time and think abou…
That is all true. Still, try pointing that out to truck drivers (for example) when they start getting laid off because the company can't handle the automated competition. Economy-wide, there will always be jobs for people to do, it is the large number of individual workers who will be scared for their particular jobs.
Which has almost certainly been a factor in what's been happening to labor since the 1980s, who have seen their wages remain stagnant and job security fall through the floor (especially for those under 30) while the economy and productivity continues to grow and grow. This is, I would say, fairly obviously a bad thing, and requires a lot of rethink in order to makeup for the extreme power imbalances and iniquities at play, but very little of substance has been done about it so far.