Imagine an AI with a model trained exclusively on a specific set of medical books, the same set of books all doctors have access to already. While there's still room for error it would guide the doctor to a very familiar reference. No internet junk, social media, etc.
Exactly as you say. It's a tool, not a replacement. Certainly not in healthcare anyway.
That's how I felt here in the UK when I woke up to see the majority voted for Brexit. Before that I thought people can't be that dumb. Apparently they can.