Using LLMs properly requires LLM-fu.
Just like Google-fu back in the day.
The kinds of people who had developed an intuition on how to formulate their query (sometimes in non-obvious ways!) to get great results.
In the early days of Google, some people literally got paid for this skill!
The people who find LLMs most useful today are meta-experts: generalists.
People who play "out of position" a lot.
Asking a domain expert if an LLM gives a useful answer in their domain of expertise is the wrong question.
The question is: for the generalist, does it give them more calibrated confidence in an unfamiliar domain more quickly than they would have otherwise?