It's your scenario, you said you had no batteries and had to drill holes by hand, I'm saying that's fine for drilling holes but if you have no batteries (or solar panels, those could charge your power tools as well so they're not in the scenario!) you can't alter computer code by hand.
Leaving computers aside, we can take a piano player - can play a piano but he might not know how to build one. A doctor can interpret X-rays but he can't build an X-ray machine.
And so on. We are living in the reality where many, many people are using tools they don't understand how to make already, and have done so for 100+ years.
>Some .. are you advocating the answer should be none, in your future?
I'm not advocating anything, I'm just saying that this is the reality already, it's not new with AI.
Ideally we'd forever keep a chain of key people who know how to make everything from atoms, but realistically that's a chain that will break. It's happened before, medieval dark ages for example.