Two things about air travel. One is the amount of noise generated by a passenger when trying to get an upgrade doesn't achieve better results. Proper gold cards (or above) always win. Second, there's a technique called that ground staff use which is basically 'push the problem forward'. Thus, at the gate, without a magic card, there's not much that a noisy passenger can do. Get on the plane or go home.
I can't help wondering whether the 27 remaining members of the EU are using an airline playbook? They each have a golden card, but our number 28 British one is already kind of suspended.
As for Theresa and and occasionally David - they are both letting the problems roll forward, making statements without tangible plans or solutions for what they are accepting. It might be occasionally noisy, but they are still getting closer to the gate without an upgrade.
Oh yes and there's another negotiating tactic, called 'get the boss out of bed' (a variation on the union negotator's 'send in the fish and chips'). Sound familiar?