That's not really what I meant. What I meant was, you seem to act as if enforcement of this policy would require a lot of logistical work on the part of the air

That's not really what I meant. What I meant was, you seem to act as if enforcement of this policy would require a lot of logistical work on the part of the airline to ensure that the passenger wasn't separated from their bags, or that they were compensated for whatever they had to ditch due to security. However, that is not actually the policy or law they have to follow, and they are free to do arbitrary things. This makes enforcement much easier. Whether or not that is "sane" or "right" or "wrong" isn't material to my counter-point.