A human has a motive that exists that frames the thought being expressed. An LLM is going to be creating a “de novo” thought in response to a line of questioning.

Psychology has shown that a lot of those motives are just post hoc narratives, similar to LLM.

Or, as the extreme claim (and the one that I believe), all of them are: https://en.wikipedia.org/wiki/Epiphenomenalism