Because this is the forum of a non profit association, not a public forum.
I get to manage the general area where everybody can talk about pretty much anything, but there are categories accessible only to coordinators or theme managers.
If a coordinator comes in the general area and gets involved in a flame I cannot prevent him from partecipating in the coordinators section. And if I put them in queue I should not be able to see messages sent to the coordinators category (to which I have no access).