For any such question, either there is an objective way to decide it accepted by all parties or there isn't. If there is, game over and everybody wins.
Custom affirms that the owners of the project make the binding decisions.
We have previously observed that custom also exerts heavy pressure against dilution of ownership by forking. In this view these customs have less to do with the dilution of reputation incentives than with protecting a craftsman's right to execute his vision in his chosen way. To analyze these, we need to take the Lockean theory one step further and examine conflicts and the operation of property rights within projects as well as between them.