In your example programmers are the monks or the press makers. At some point we're not needed any more (at least at the same scale) since word processors have already been built.
There are more newspapers but they are all owned by larger players which means different types of machines and parts.
A better example might have been blacksmiths. Although the amount of people making cars is a larger group.
If you read the whole article it shows a path to new jobs...
Digital printing has become the fastest growing industry segment as printers embrace this technology. Most commercial printers now do some form of digital printing.
Manufacturing deals with making 3D objects.I think 3D printing belongs there.
makes more sense to think about GPT-2 like language models replacing authors, than word processors
Anthropologists estimate that the work week was at 20 hrs at the end of the Stone Age. We have been inventing new problems in the vacuum created by our successes for, literally, millennia.
There are some parallels to induced demand in road construction: when you build a new road to ease traffic, traffic increases to use up that capacity. But that isn't a sign that demand is infinite, it's just that demand is limited by the available resources. If you keep building roads, at some point they will become emptier. Similarly, at some point development productivity will outpace demand, and we will start optimizing our own jobs away.