Andy is what we would call today, an AI. He's learned to be vain and smug. In my opinion, the folk of the Calla are written to be innocent, naive and trusting. They have learned from bad experiences, but not enough to question Andy, "Why do you know this? How do you know this?" They accept whatever he says.
Do you think people in the real world behave the same way? I do. I see people who accept anything they are told without question. It's a scary child-like way to live. I think we should question everything and accept nothing without proof. Of course, that is my opinion and others are welcome to theirs.