Not sure I'd agree with number 17.
Hedging can be, but should not be, gambling. In fact, properly used, it is reducing risk.
Regardless (and I have no idea what happened with the hedging arrangements) I would have thought Qantas had a moral duty to do what they could to get those two out of Vietnam, that might have included some murky semi-commercial arrangements. Might not be completely the cleanest way to do it, but prolonging their stay would be dirtier, imo.