I think this is overall a good criticism of the current generation of LLM's- They can't seem to tell you how sure (or not) they are about something. A friend mentioned to me that when it gave ChatGPT a photo of a Lego set with an Indiana Jones theme earlier today and asked it to identify the movie reference, it meandered on for 2 paragraphs arguing different possibilities when it could have just said "I'm not sure."

I think this is a valid area of improvement, and I think we'll get there.