I get it. And no I don't think Kubo will really go into it. Like the big old glaring fact that Ichigo comes out of, and through his body with the help of his substitute shinigami badge but then he can interact with his own human body. I think Kubo is following his own logic inclinations specifically for the story and so sometimes if not truly thought out to the end, they will create like conflicting logic paradoxes in the minds of some readers. But as some1 told me "You're just thinking too hard about this, it's a manga."