Sorry. For some reason, I just saw your response.
I disagree with the idea that everyone writes their own novel. Becoming a player in this world requires more than just merely existing in the physical sense.
"I think therefore I am"
To me this is the minimum standard for human existence.
NPCs do not think. Their responses are predictable and canned. Their dogma formulated and refined by special interest groups. Their novel was not written by themselves and if it was, they copied the text from somewhere. We have seen their story before and that is why we know what happens next.