Yamato is certain the type of character who has high probabilities of future devolop, and is very obvius she is cringe in purpose (Luffy saying she is not Oden, Momo and shinobu reaction, tobi roppo treating her like a child). Or simply Oda prefers the easy shit writing and not devolop her, but if the first thing happen its gonna be very funny how many post and comments age like milk and the shitty youtubers/redditors knows more of OP and how Oda shitty writing devolops his characters, than people of this community