This is a tautology. At some level, nobody can work at a lower level of abstraction. A programmer who knows assembly probably could not physically build the machine it runs on. A programmer who could do that probably could not smelt the metals required to make that machine. etc.

However, the specific discussion here is about delegating the work of writing to an LLM, vs abstracting the work of writing via deterministic systems like libraries, frameworks, modules, etc. It is specifically not about abstracting the work of compiling, constructing, or smelting.