I wouldn't call pasting verbatim training data hallucination when it fits the prompt. It's not necessarily making stuff up.
I feel like you're unfittingly mixing tool target behavior with technical limitations. Yes, it's not knowingly reasoning. But that doesn't change that the user interface is a prompt-style, with the goal of answering.
I think it's fitting terminology for encompassing multiple issues of false answers.
How would you call it? Only by their specific issues? Or would you use a general term, like "error" or "wrong"?
Yes, I do. What info are you looking for? You didn't even say.
I know the Mumble and SoftEther VPN projects use them for hosting their website/project hosting.