Right but people are arguing about it because it is unnecessary! I bet if an API you use broke backwards compatibility just so it could `color` to `colour` you'd be arguing against it too!
OK so we’re finally at the actual core of the matter: the technical arguments aren’t actually valid, it’s that you don’t think it’s worth the minimal effort because you don’t personally know of anyone that is offended by the master/slave connotation of “master” branches. That’s always the actual core of the complaint yet everyone dances around it.