That's the kicker, LLM driven stories are likely to fall into the same trap that "infinite" procedurally generated games usually do - technically having infinite content to explore doesn't necessarily mean that content is infinitely engaging. You will get bored when you start to notice the same patterns coming up over and over again.

Procgen games mainly work when the procedural parts are just a foundation for hand-crafted content to sit on, whether that's crafted by the players (as in Minecraft) or the developers (as in No Mans Sky after they updated it a hundred times, or Rougelikes in general).