The problem is that the limits to LLM answers have more dimensions than just "uncertainty". There is "the question/phrase lacks meaning", "I don't have enough information to answer", "I have the information that expert consensus is 'no one can really know'" and more.
I think there's a human tendency to reduce the problem one has answering a given question to a question of just "uncertainty" and so we look at LLM answers as involving just single level of uncertainty. But that's anthropomorphism.
AI images (and photograph before it) showed us new, unimagined ways an image can be wrong (or rather, real-seaming but wrong). AI language interactions do this too but in a more subtle way.
I think there's a human tendency to reduce the problem one has answering a given question to a question of just "uncertainty" and so we look at LLM answers as involving just single level of uncertainty. But that's anthropomorphism.
AI images (and photograph before it) showed us new, unimagined ways an image can be wrong (or rather, real-seaming but wrong). AI language interactions do this too but in a more subtle way.