I think there's one key flaw in this, as well as it being fiction. There's a difference between being able to do something once or at very low volumes, and then doing it at scale for production.
So long as you understand the basic principles, you could make an integrated circuit using hand-drawn acetate or glass sheets and some really simple optics. Or ignore integrated circuits and make stuff from discrete components which you made yourself. You only need to care about making complex EUV scanners much, much later on.
In research labs around the world, we make stuff almost completely from scratch all the time. It's costly in terms of labour, and it's doing low volumes with lower tolerances. But it is making real, working stuff. In thousands of companies, research findings are developed into manufacturable products, with a lot of additional development work, optimising and refining.
We already know you can go from most concepts, to research, development and production. We've done it, and will continue to do it, in every field we can think of. I think to assert that we couldn't reinvent every one of the technologies humanity has discovered and developed fails to recognise just how resourceful and ingeneous we can be if we have the drive and opportunity. It might be that some technologies would be harder to reinvent, or would take longer to reinvent, but we're a capable lot and I'd bet we could get up to speed quite quickly given a few hints about what was possible. There are thousands of manufacturing techniques from the last century which we have lost the capability to use. Material quality changes, loss of knowledge and skills through retirement, fires, water damage etc. But we could regain each of them if the need was there. Look at FOGBANK for a recent example of a capability which was lost and regained. It takes time, money and resources, but it's possible.
The main thing we have in today's world which a collapse would eliminate is effectively limitless energy, and redeveloping that would be far harder than any individual technology. They would lack the more easily exploitable resources we already exhausted, and it would take time to overcome that hurdle through additional technological advances. But that is not a hard barrier. They would have to develop alternative sources and work out different strategies. This might delay things, but it wouldn't stop them entirely. We had sophisticated civilisation before the discovery of coal and oil, and electricity. Wind, water, solar and wood were widely used for mechanical and heating purposes long before electricity was discovered.