Godin's coining of the phrase Northern Soul (or any other name that identified a scene that was patently different) was necessary at the time as the North and South's idea of what was soulful had diverged. Southern soul fans had gone funky for the most part apart from a small band folk who used to travel Up North. But a scene still needs a name or else its not a scene, granted Rare Soul sounds better, but then you get rare deep soul, rare sweet soul etc, so its not so exact. Whatever you call it, outsiders aren't going to understand what its all about anyway, especially nowadays. Once you could say to someone "you know the beat of I can't help myself, well its like that" and that would sum it up, but with changes in the beat, speed (both types) and styles of music it's harder.
But in a way we don't really need a name for the scene anymore we know what we're here for and thats enough, you don't need to state in flyers and other ads that its northern soul, we know...which leads me to my final point and thats a moan about certain djs who feel the need to tell us during their spots that we're listening to some fantastic northern soul, matey, we know why we're here.....!