Are you really making the case that teaching a person how to work is equivalent to prompting an AI?
Teaching modifies the learner. Prompting doesn't modify the model. It provides additional context that influences a single inference. A person who has learned something can apply it years later without being reminded. An LLM generally cannot unless the knowledge is incorporated into the model itself or provided again.
The value of LLMs is that they're stateless. With sufficiently detailed documentation and a well-bounded task, they are quite useful.
I'm not claiming LLMs are not useful, they most certainly are.
Take a human and prevent them from sleeping after covering a fact then years later they won’t know it.