Lyth game mechanics isn't ideal, faction activity varies, and in that situation mod lore introduces element of order on the server.
While Liberty never intended to assault Rheinland for real, RM already is stronger than it should be, during the Nomad War vast majority of Military was destroyed, including all but one old immovable battleship. Disco lore about Rheinland is meh in that part, it's possible to construct few battleships in less than 2 decades, but being second strongest navy after LN is just meh.