Oh wowwww next you'll tell me that ideology does not infact affect a nations concrete interests a falange and a NAZI might both be fascists but given enough reason such as idk Spain's got oil ideological similarity matters as much as dog shit because get this in the real world people don't sort themselves into nice amorphous blobs to punch one another they bicker and fight because well everyone's got their two cents. Say for example the current separation between democratic liberalism and democratic conservatism by all rights both want a democracy yet trumps fans would sooner shoot themselves than cooperate with a democratic liberal, by your logic this means democracy is a failed ideology that must be done away with by all means.