If we take "operator skill" to mean "they know how to make prompts", there is some truth to it and we can see that by whether or not the operator is designing the context window or not.
But for the more important question, whether or not LLMs are useful has an inverse relationship with how skilled the person is in the context they are using for. This is why the best engineers mostly shrug at LLMs while those that arent the best feel a big lift.
So, LLMs are not mirrors of operator skill. This post is instead an argument that everyone should become prompt engineers.