so, someone was socially rude, so some pilots decided to risk the lives of everybody on board to teach a lesson.
Aerobatics , even if 'borderline-legal', are still more stressful on the plane and components.
Stress still causes early failure, even if the stress was produced with legal maneuvers.
Hopping curbs in a passenger car is not usually illegal, it'll just destroy the car prematurely.
Spontaneous aerobatics still risk injury from gravity-flung objects in the cabin.
So, i'm glad the person you dislike had a lesson taught. I'm less glad that the crew acted unprofessionally.
I'm very glad that no incidents occurred as a result. The sky isn't the place for revenge and vengeance, especially on passenger flights.
I really hope that the crew has matured since then. There are plenty of ways companies and professionals can refuse service without risking collateral damage like that.