Comment by LeifCarrotson

"They" being the waiter or waitress, of course. Good ones can navigate complex bill splitting arrangements and even better can manage awkward interactions like one person quietly paying for another's dessert or covering an appetizer for the table, know the menu not only by memory but also can recommend dishes that the guest may prefer, and generally make the dining and ordering and paying experience better.

Bad restaurants think they can replace those skills with a QR code on the table optimized for the lowest common denominator.