For the avoidance of doubt, here is how the UK ANO sees disruptive pax:
Acting in a disruptive manner
245. A person must not while in an aircraft—
(a) use any threatening, abusive or insulting words towards a member of the crew of the aircraft;
(b) behave in a threatening, abusive, insulting or disorderly manner towards a member of the crew of the aircraft; or
(c) intentionally interfere with the performance by a member of the crew of the aircraft of the crew member’s duties.
The pax who refuse to comply with crew instructions (issued lawfully under the authority of the aircraft commander, iaw the Chicago and Tokyo Conventions) are usually dealt with under (c) because the crew member can't carry on with the rest of their duties while being delayed by someone who won't do as required. It is also a distraction, which we know is not a good thing when it comes to safety. Matters are made worse if the cabin crew need to contact the commander, whose attention should be on the conduct of the flight, not diverting time and thought to potential delays or diversions.
Other countries have similar laws, for example the USA:
Federal Aviation Regulations 91.11, 121.580 and 135.120 state that "no person may assault, threaten, intimidate, or interfere with a crewmember in the performance of the crewmember's duties aboard an aircraft being operated."