Some pilots do selfish things that hurt everyone else, and then get all self-righteous when they're called out on it. The company doesn't have to do anything to make that happen, when a select group of people cause contract concessions through anti-social behavior.

Sure, checkerboarding is poetic justice considering the schenanigans the company has pulled with getting a new contract done. But it really is destructive. Anyone who thought that there would be no consequences for doing that just because the contract permitted it was pretty short-sighted IMHO.