I once read Ben Franklin's autobiography. I have yet to experience any great blossoming of our relationship.

More seriously, the novel is a unidirectional medium of communication. Not a relationship. That said, it is meant to convey a perspective. I don't care if it's a human, a robot, or a little green man's perspective. It just has to be an interesting, useful, or enlightening perspective that I didn't already share.

Right now LLM's don't really have unique perspectives, that may change. So I withhold judgement. As of today, I wouldn't read an LLM's novel. In 10 years, who knows?