I think you are missing the point. My guess is that this will not create story, but they will try to integrate it with their upcoming VTT. Imagine you as the DM describe what you want and the tool prepares everything, with monsters, terrain and the whole lot. I am pretty sure that will be the angle they take.
Of course… It can only prepare from the database of premium materials you have to painfully buy bit for bit
My only fear would be that this turns dnd more into a walled garden.