Until passports are suspended and these knobheads are unable to travel for a period of time it will continue.It happens more often than you think
My niece works as cabin crew for easyjet and she's always relaying tales of drunk passengers consuming their own alcohol and vaping
Working in the aircraft industry I have witnessed it on many occasions, gaffer taping and tie wrapping someone to a seat mid atlantic, while being spat at and having death threats is truly terrifying for other passengers.