I like that formulation because it foregrounds the important thing: What is the agreement? What kinds of things are disallowed? Different communities are going

I like that formulation because it foregrounds the important thing: What is the agreement? What kinds of things are disallowed? Different communities are going to have different ideas about that, and, therefore, exclude different people; making it explicit that it is an agreement with allowed and disallowed behavior, as opposed to trying to pretend that "Be Good" is somehow a workable rule, gets us to the first stage of being able to discuss what behavior is allowed and disallowed, instead of pretending it's obvious, somehow, which only works if the actual goal is a dictatorship with arbitrary rules which disallows that discussion.