I was thinking of the first solar civilization, which lives totally in space. Near a star, but not in a planet, and no gravitational pull anywhere. They build tubes 10 km long, a shot board is put at one end, and the players at the other end. They shoot darts at the board, and each shot takes 5 hours to reach the target. That's their national sport.
Problem is, I have never played darts, i don't know anyone who plays it, I will ask the LLM to fill in the blanks, of how a story based on that game could be constructed. Then I will add my own story on top of that, I will fix anything that doesn't fit in, add some stuff, remove some other stuff and so on.
For me it saves time, instead of asking people about something, hearing them talk about it or watching them do it, i do data mining on words. Maybe more shallow than experiencing it myself or asking people who know about it first hand, but the time it takes to get some information good enough collapses down to 5 minutes.
Depends on how you use it, it can enhance human capabilities, or indeed, mute them.