Members of my family have been left stranded in a foreign country when an airline refused to carry them because one of them asked why he was required to show the same documents for the third time in rapid succession. (The airline's excuse for this absurdly disproportionate response changed so many times afterwards it was hard to keep track, and I won't say any more because as far as I'm aware legal action for compensation is still pending.)
Hundreds of people from my country have recently been held in hotels under armed guard because after a diversion to a different country's airport due to the ash problems, they obviously didn't have visas, so they couldn't even get a train home. I'm not sure why anyone in a country these people never wanted or expected to visit would consider them such a security threat that they couldn't leave and had to be held at gunpoint, but there you go.
These things are not trivial, and I don't think a single one of those people would consider objecting to this sort of security theatre "being silly".
And you fail on the "bit in the middle", because all the unpleasantness that I described in those earlier posts happens on a single flight.