Yes and no. I think a lot of of this automation will mean we will be going back to the world of trade schools where repair becomes a lot more important. Same goes with installation of these automated systems. The US loves to push "shovel ready" construction jobs but we should be focusing more on training for installation and repair of automation.
I've found it kind of odd that we've lost a lot of the trade skills being taught in high school. I'm in my mid 30's and I'm the only person my age I know who took classes in Small Gas Engines, Carpentry, Electrical, Plumbing, etc. From that point a lot of kids went right on to get Journeymen certs and many now own their own businesses. If they would bring those classes back and also teach these types of skills to those underemployed I think you could easily transition into any type of related field.
As for whether we need 30 million engineers, thats entirely up to what we want to be as a society. If you don't think we can come up with engineering work for 30 million people I beg to differ.
We're down 5M factory jobs since 2000, to something like 13M. And the rest are slated to go as automation becomes cheaper. When factories 'come back' from overseas, its only because now automation is even cheaper than foreign labor.
https://www.statista.com/statistics/196630/number-of-employe...
Less than I would of thought- considering it used to be a rite of passage for many teenagers.
That's why UBI is a hot topic. Its a way out of a collapse.