The value is hard to see now, but go back 20, or even 10 years ago. Having a plain English conversation with a computer was absolutely painful. Not in a "that fact isn't true" or "that citation doesn't exist", but more like "this thing didn't understand the question at all" or "it seems like all these responses are canned".

We've gotten to the point where it's almost a baseline expectation that an AI can be indistinguishable from a person. Now the question is -- how smart is this person and if this person has any traits that are problematic, e.g., hallucinating.