This is indeed the bunker mentallity.
For example, I say....
Recently, as you know from these boards, there was a serious incident caused by pax thinking their aircraft was on fire and attemptiong to enter the flight deck during the take off roll - this is completely unacceptable behaviour
Guppy replies
You appear to suggest that such behavior from a passenger is in any way acceptable or tolerable, or even justifiable because the crew didn't take time to give them a ground school on cloud physics.
Nothing like completely ignoring a point made in debate.
Then he completely misses the point of the Palma incident (through ignorance of it) and replies about shockwaves forming over the wings, when I ask him to clarify what he means, as I cannot believe that he is so uninformed as to miss the point of my comment, he gives a smart answer that I should seek flight instruction.
Guppy also thinks
then perhaps they ought to be shot in the back of the head by an air marshall for posing a threat to safety of flight
I think that last statement is probably pretty insightful
Sadly, Guppy is postulating that gunplay is the panacea, instead of accepting that a quick PA from the crew, on demand, would increase flight safety.
So, I will end my comments on this thread, as Guppy obviously suffers from highly selective readiing skills and maybe a god complex and there is little point trying to reason with him.