Ah, but they're not boring.
Utter predictability is always boring.
Audiences for whom a bad act is new might find it interesting at first. Once the predictability of the act becomes apparent, they lose interest, too.
Good martyr acts aren't boring. But good martyr acts don't come from people who are writing their own material.
Hasn't diva misbehavior met with diva response?
No. Martyr-divas are in the self-immolation business. It's suicide.
The game is to commit suicide in a way that invites the audience to blame others. Martyr-divas know the Ace of Spades is out there. They do whatever it takes to make it drop. How the card ultimately gets played is insignificant to the plot.
Admins aren't in the melodrama business. The job attracts people who expect to do a lot of behind-the-scenes work for a group. It's the opposite of a spotlight job. These people have a finite amount of resources and a lot of people to take care of. When one person routinely demands far more time and trouble than that person's contribution is worth, admins see someone asking for a permanent vacation.
Martyr-divas know this. Tipping that point is how they flush out the Ace.
All that remains after that is to strike the pose and play the scene.
Archer
All species are transitional.