The question is, by whom? What I've said is that you do not have the authority to stop me from boarding the plane, and neither, for that matter, does a LEO - at least not if the sole basis for the detention is the regulatory provision cited earlier.

As I stated previously, if all you're relying on is that regulation, this remains a private matter between me and the airline. And, although you may well be able to influence what the airline does, the airline's decision is also, ultimately, outside your control. In other words, if the airline got fed up with your gate antics and told passengers to just ignore you and board the plane, what could you do about it? Could you detain the passengers? Could you detain the plane?