Isn't WCS a little too unique for sukuna?

I mean it seems unusual to give Sukuna an attack to cut the world itself to begin with. I mean it sounds more like a Limitless technique(space manipulation) than a slashing technique. And if it isn't a dimension slash but has some of it properties then If all it takes extending the target area to the world itself then Gojo saw it happening so he could have also extended his technique to the world itself?