The airport security is likely helping a bit. But I'd also noted that it was the response protocol rather than the on-ground, pre-flight, preventive measures, which seemed to catch and stop this guy. Kudos to the flight attendant and passengers.

IMO, disarming all passengers is counterproductive. In this case, bodymass and a dozen or so men seemed to do the trick. But a couple of PR-18s might have come in handy.

For those unfamiliar with the term, "PR-18: public-relations 18 inch", aka, nightstick.