A mistake is usually seen as something that happens when someone (or metaphorically also, something) makes an error, but is capable of solving similar problems

A mistake is usually seen as something that happens when someone (or metaphorically also, something) makes an error, but is capable of solving similar problems through understanding. Hard to put in words. But that's roughly what is concerning about the "AI makes mistakes" narratives. It implies they are caused by a (fixable) fault in reasoning or memory. LLM "AI" will always respond that it made a "mistake" when you correct it. It is trained to do so, and humans often behave similarly. It is hard to come up with a good definition for "mistake", yes. That does not change that using this in case of LLM hallucinations is misleading.