I think this is the biggest flaw in LLMs and what is likely going to sour a lot of businesses on their usage (at least in their current state). It is preferable to give the right answer to a query, it is acceptable to be unable to answer a query - we run into real issues, though, when a query is confidently answered incorrectly. This recently caused a major headache for AirCanada - businesses should be held to the statements they make, even if those statements were made by an AI or call center employee.