As always, sanji fans will say this is character development. 🤢🤮
Sanji has so much character development if you believe his fans, yet he stays the same.
Sanji fans during the whole Black Maria thing: "Oh wow, this is such a good moment for character development for Sanji, he learned how to ask for help".
Sanji during Enies Lobby: gives speech about how every straw hat can do it's own thing to Usopp and says it's okay to let people do what you can't, the same way he let Usopp snipe the soldiers and save Robin, because he couldn't.
Yeah, Sanji really didn't know how to accept / ask for help.
The only character development Sanji has is backwards, he already knows something, then he just forgets it to make the plot move forward, and then he learns what he already knew before.
Pretty much Whole Cake Island.