Don, most of your previous argument is ramble about a dead criminal who had NOTHING to do with the events reported above and most of your contribution is therefore not worth responding to.
But . . . . .
"No fly lists exist to protect the travelling public from the Man Haron Monis's of this world"
Are you suggesting the person in this article posed a similar threat as a confirmed murderer simply because he politely requested to vacate the aircraft, something he has the right to do unless Australian law now permits airlines to take hostages?
"He is now regarded as being a threat to the security of passengers that would fly with him."
No, at no stage was he considered a threat to security and nothing in this article or any news media report about the event implies any sort of threat existed.
These people delayed a flight and should be dealt with accordingly. Perhaps QF will leave the ban in place and these people will be required to fly Virgin instead.
But next time, lets not draw parallels between someone wishing to leave an aircraft after ETD with someone who committed murder.
Jenna, you really make valued contributions to the world and for that I thank you.