Passport scanners at the airports are highly regulated. Facial recognition is not.

This is the airline collecting your biometrics — a completely different entity from the border control that usually checks your passport.

You insert your passport and that should be it. Border control has already checked your identity. Afterwards, your photo was taken by the airline in order to "verify you".

Granted, airlines could get your photograph in a myriad of ways, but this system makes it as convenient for them as it can get.