‘’’Why would a terrorist engage in patently obvious disruptive behavior BEFORE a plane takes off?’’’
Oh, maybe, to create terror?
How do you think the passengers felt? Maybe you should email your comments to those folks.
The “terror” was created by the overblown response, not by the guy running to the bathroom.
Terrorists have no use for commercial passenger planes that are still on the ground. If he was planning to hijack the plane, he’d have waited a few minutes until it was airborne, to start being disruptive.