It's excludable, so I don't think it can be considered a common good.
In principle you can exclude someone from being able to file a plausible complaint after they've been wronged, but if we take it as a premise that we don't want to do that then it's not very excludable anymore.
In principle you can exclude someone from being able to file a plausible complaint after they've been wronged, but if we take it as a premise that we don't want to do that then it's not very excludable anymore.