From what I've seen so far the "game" (if you can even call it that) highlights the weaknesses of GPT-2 much more than its strengths (the model's answers to user actions are random, the story is incoherent, the world is inconsistent). I don't get the feeling it was setup to demonstrate _weakness_ though. I think it was meant to demonstrate strngths.
I suppose it's just advertising for the BYU Perception, Control and Cognition Lab, but it sounds awfuly expensive for advertising for an academic group.