That's the thing though, it hasn't.
For example, Sanji will need to accept his heritage and everything that comes with it, instead of just denying a part of who he is. He needs to accept that he is Vinsmoke Sanji, a prince of the Germa Kingdom, son of Judge and Sora, regardless of what Judge has to say about it, or what Sanji feels about these facts.
We've seen a hint that Oda will tackle that with the way we were given Sanji's reaction to Momonosuke's moment of yelling his real name regardless of the consequences