Look... if me and 199 other passengers are going to abide by restrictions we were informed about before we paid any money for a ticket, it's completely unfair that the authorities make an exception for one passenger who accepted the same contract we all did.

Arrest them on board, handcuff them and lead them away in handcuffs at the destination. No sympathy from me, especially since the only way the handcuffs route is going to happen is if the passenger in questions ignores the instructions from the flight crew.

I also have to note that on most flights, whether domestic or international, the it's already a criminal offence to ignore an instruction from the flight crew. The airline here did not need to make publish a new rule, they could have simply had the flight crew inform the annoying passenger.

The airlines could alway remove you for literally any reason. Even if it was discriminatory or otherwise illegal, you'd still definitely be getting off the plane, at least.

Good. You want to be an asshole? Do it in your car, driving alone, to your destination.

The ones with limited recourse are the flight crew who are trapped with you and a hundred other asshole for hours with no escape and very limited options in case of a serious disruption. If there is one space that has justification to act as temporary dictatorship, it's an aircraft in flight.

You might blame the airlines, but passengers have become more rude and entitled year after year. It's really everywhere now, not just on airplanes. I personally am fine with removing passengers who think they are entitled to annoy the rest of us when we can't just get up and leave the place.