I gotta say that's very wrong to steal someone else's content and pretend it's yours. And apologizing doesn't make it ok, especially if you consider it's fine, or that it doesn't matter. It does matter. But I find some of you pretty harsh on him though, the guy is only 17.
I can't say I agree with the analysis itself because I think it gives Oda way too much credit. I feel like this whole "character development" you mentioned only comes from a fan who overthought everything involving his favorite character. I very much doubt it was a conscious choice from Oda, he's just not consistent in the way he writes certain characters, at least since the timeskip. Their way of thinking and behavior depend on the story Oda wants to tell and how he wants to tell it, when it's the story that should depend on its characters.
I can't say I agree with the analysis itself because I think it gives Oda way too much credit. I feel like this whole "character development" you mentioned only comes from a fan who overthought everything involving his favorite character. I very much doubt it was a conscious choice from Oda, he's just not consistent in the way he writes certain characters, at least since the timeskip. Their way of thinking and behavior depend on the story Oda wants to tell and how he wants to tell it, when it's the story that should depend on its characters.