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.
No such thing as EVERYONE having fun. You can try to make as many people have fun. Now the question is, should fun of individual triumph over many?
But remember, this is a game. If your realm is trying to make you recruit a unit when you don't want to, you give them a big middle finger then leave.
