Search engines don't claim to provide answers. They search for documents that match a query and provide a list of documents it has roughly in order of relevance.
If there's nothing answering what I was looking for, I might try again with synonyms, or the think documents aren't indexed, or they don't exist.
That's a very different failure mode than blatantly lying to me. By lying to me, I'm not blaming myself, I'm blaming the AI.
Would you say "pah why are you shipping a search engine that only sometimes finds what I'm looking for?"?