Different skills. Look into people building with Arduino's or Raspberry Pis, or people building their own computers, or people coding. Look at the DIY movement or the "maker space" people.
They don't represent all people, but this movement is huge.
I'm not saying that isn't good, because those new skills are needed, now, too. But the raw ability to fabricate and design and build is disappearing. The skills are disappearing, too, along with shop class in Junior high and high school. Computer skills are fine if you can build or can afford the CNC machine or other odds and ends, but if you tried building a bulldozer in your garage today, a significant number of people would find their project DOA after the HOA called the EPA or something like that. (Besides howling about the onsite storage of the sorts of materials that inspire and fuel such projects.)
It is a different world, but how many people even know someone who could make the tools they'll need to grow food if the balloon goes up? (much less know how to grow food).
One man's "old junk car" is another man's hot rod in process...
