Furthermore, it is not "nuts" to dismiss LLM user experiences. In fact, you must dismiss all subjective experience of LLM use as evidence of objective phenomena, even if the LLM user is yourself. Fly by instruments because the cognitive fog is too thick for your eyes to see.
Because the novel thing about LLMs, the thing that makes them dangerous, is that they are—by design—epistemic disruptors.
They can produce symboloids more rapidly than a thinking mind. Repetition influences cognition.