Going to be absolutely cringe this is if they decide to return to their seats and clap/chant like good little bhoys after their toilet break.
Either go and leave to make a statement to the board or dont bother!
How many more times are you going to make this point? We get it. You're trying to make the perfect be the enemy of the good. You're attempting to assume a moral superiority
again by claiming that the protestors aren't "true protestors" (or "superprotestors" if you will) since they won't fully commit, reminiscent of your view that some fans aren't true fans.
In fact the organizers were brilliant in leaving it open as to what fans should do after they walk out. Some will return after 5 min, some will stay until half, some will likely leave altogether. That flexibility allows for a much bigger participation since most who want to show their displeasure to the board don't have to feel conflicted about not supporting the team, or throwing away hard earned money spent on something they love. A hard command to walk and leave would have resulted in a much smaller group and thus less publicity.
No one in the media will make the cynical observation you do above when the majority of those who walked out return to their seats (in fact it is likely they will make the point fans returned to support "the team" after sending their message to "the board"). Instead the story and headlines will be all about fans making a statement that enough is enough and change is needed.
Stop playing the "you're doing it wrong" superiority card. It's tedious, and we know you feel an innate superiority to the rest of us here, it's already baked in to our assessment of you and your posts. You don't need to keep shouting it.