I wasn't applying that statement to just the hijacking scenario but rather applying it to the reason cc is not currently legal on comm.airplanes altogether.
The negatives for legalizing it would outweigh the positives.
Especially,again,a successful plan insuring armed hijackers didn't board the plane in the first place... but also negatives such as AD's(who's gonna pay that law suit?), flight rage(road rage in the air
) and the fact if you had a flight rage incident, how many people would be shot due to friendly fire in such confined quarters, etc.