I wouldn't have put it that way, but the claim Apple is making (in baby talk) is that these are good authenticators, not that they are good secrets. I don't think the average person in their audience has a strong reason to understand the difference. If people were used to biometrics and you tried to get them using passwords, then it would be critical to explain the difference (if you tell the wrong person your password, it loses all its security!)
The mistakes you can make by misunderstanding biometrics seem like more of a problem for system designers, who hopefully don't get their whole understanding of security from Apple keynotes.
The mistakes you can make by misunderstanding biometrics seem like more of a problem for system designers, who hopefully don't get their whole understanding of security from Apple keynotes.