Personally, I view current AI as a brainstorming partner. Its been a very good sounding board for world building ideas. It can bring up topics I hadn't considered, and help me flesh out topics by asking me questions. Now, when it comes to mapmaking I just don't think it is good enough. Image generation frequently has weird artifacts or nonsensical parts. I've experimented with generating floor plans for buildings and to say I wasn't impressed would be a large understatement.