@Fleet Admiral Lee Hung not that I disagree with anything in your post but hasn't destiny/fate/whatever always been a part of One Piece's narrative?
Perhaps the destiny/fate deal was not as egregiously heavy handed in execution as it is now but I don't think One Piece ever really had a hard work ethic theme like Dragon Ball. There is the faux as fuck underdog portrayal of Luffy but I don't think that is quite the same thing.
Even the simple concept of devil fruits relies on insane amounts of luck. Eat a fruit and you play a Russian roulette game to get something awesome like full control of a whole arse element or something lame like the ability to crap glue.
While I do not think there is any clash of "destiny chosen" vs "hard work ethic" since OP never had the latter, there is perhaps a different thematic contradiction going on with One Piece.....
Destiny vs Freedom.
Both are big parts of One Piece and I do not see how these two are all that compatible with each other.
On the one hand, we have destiny which is an abstract concept in regards to individuals being set on a predetermined path by whatever meta force (the plot
) decides that a certain predetermined individual has to do a certain predetermined thing to achieve a certain predetermined outcome (e.g. Mary Stu has been arbitrarily chosen by fate to slay the terrible Blabberwock to free the land of Barnia and she
is going to do it because plot).
On the other hand we have freedom, an even more abstract concept that can be interpreted in dozens of ways but regardless, the main thing associated with freedom is ultimately the ability to choose i.e. choice (e.g. Mary Stu decides to leave because she ain't paid enough to deal with Blabberwocks and cause the people of Barnia are all arseholes anyway).
So we have predetermined path vs choice.
How the feck are these two ideas compatible in the slightest? Lol. They are antithesis to each other.
It does not help that we now also have bullshit like Future Sight which is supposedly all about seeing the future which pretty much implies that everything is predestined so screw choice I guess.
Another thing that muddles this all even further is the fact that deep down, we don't actually know Luffy all that well.
He is all about freedom but we never actually get his personal opinion on what he believes freedom is about.
Feck, as far as I can recall we do not even know why he ever wanted to be a pirate in the first place. Pirate King, sure but he already wanted to be a pirate even before that. Why? Don't know. Might as well chalk that one up to destiny too I guess.