I don't think there's an inalienable right to not have a unit perse and don't have an issue with a character being banned for that specific offense. But likewise, I do think its against Government Rules for a realm's government to have a strict hierarchy of orders and blind followers being micromanaged. This is a game, not a military and government players should try to guide people, work with suggestions, help other players, leave people their autonomy, and ensure all parts of their realm is having fun.