My reply was not meant to imply fault in any way. Only that because there was “history” - regardless of fault - it would be best to defer to an impartial party.
I think of it more like Trust Level 4 members have enhanced forum level abilities, while Moderators have those abilities and also account level abilities.
That is, while TL4 members can and should be able to “do cleanup” of the forum anything involving member accounts should be left for Staff to deal with.
I’m not particularly fond of the Mute member feature, and I don’t use it. But obviously many do feel a need for it. Knowing what reason any member might feel the need to Mute another member is beyond me. Anyway, I think you may be assigning “more than a member” aspects to TL4 members when they are only members after all, albeit with extra abilities.