I think it should be relatively possible for an LLM to know when it's talking about something in the risk zone of libel. And when it identifies such a case it links direct to source material rather than trying to fabricate an answer itself. This is much how a journalist works, refusing to make claims that aren't provable.

Someone needs to hold the liability at the end of the day. People are experiencing real harm from false claims LLMs are spitting out.