Earlier quoted context omitted.
You’ve moved the goal posts. It’s not that the construction of some thing, anything, that can be used to write with is difficult. As you point out a piece of charcoal isn’t hard to make. Milton Friedman’s point is that even something as simple and inexpensive as a pencil involves people all over the world working together to create it. Some mine graphite, some run ships to move the graphite, some manufacture paint, s…
I agree on goalpost but still differ on Friedman's point. Culture shifts into thinking you need objects to the point of making you forget what you wanted in the first place. Friedman wants to marvel at the thought of his beloved market.
The fact that someone could eschew mass-produced lead pencils in favour of a self-made writing implement doesn't diminish the fact that it's practically impossible for any one individual on the planet to ever actually build a pencil you can buy for the equivalent of a few seconds to minutes of labour. That pencil, and so many other mundane items like it, are artifacts beyond the crafting capabilities of any one human.