Maybe they should become British. Go away already!
How about if the NFL players ‘dis’ the Queen etal, the BRITS may not invite them back.
Wonder how many owners/coaches/advisers have put this warning out.
The only way it stops is when it starts hurting financially.
If one MUST go to the game because ticket already paid for, at least don’t spend ANY money in the stadium.
The ONLY thing worse than an empty seat is one where the patron is not spending a sou.
In that respect if one uses that strategy, better to not resell or indicate you are not going.