That's an interesting perspective actually
Maybe it's because of who's giving them? If my little cousin gave me an AI Christmas card, I'd be happier than if a stranger gave me one on the street. (Though I'd feel bummed if they didn't even marker in a single custom sentence)
i.e. higher standards of creativity/effort from a stranger than from a family member.
Also the stranger isn't stuffing a tenner in the card lmao