LLMs, kind of like Bill Bryson's books, are great at presenting "information" that seems completely plausible, authoritative, and convincing to the reader. But when you actually do know the truth about a subject, you realize how completely full of crap they too often are. And somehow after being given a patently counterfactual response to one query, we just blindly continue to take their responses to other queries as…
They have value because they are very fast, concise, and right "often enough."
People used to make your criticism about Wikipedia (and occasionally still do).
All of the following are true:
1. They regularly make errors
2. They require more caution than most people have to use effectively.
3. They have tremendous value.