IMO, moderators primary job is to moderate according to the rules laid out. Interpretation discussions and execution discussions, while mostly relevant to moderators and in some cases only interesting and valuable to moderators, are community domain and should be open to all.
My analogy would be in life there are police (executive branch) who enforce the law. while natural to have a difference of opinion, the more uniformly, consistently enforced the rules are, the better. To me this is the moderator role.