He also states, "We have to enter the main gate through budo, protect humanity from destruction, and dedicate ourselves in order to bring peace to humankind." (emphasis mine)
Of course, budo is a recurring theme in Take Musu Aiki. It is not gospel, however, and he does admit the possibility of other methods of achieving the same goals.
For that matter, would planning and directing a strategic campaign be classed as budo? It certainly would under the classification of such things in Japan, but does not involve any physical practice...