No, for two reasons.
The first is logic. The most feared man will be Luffy, there's no way Sanji is more feared than someone who orders him. The only way that would happen would be if he left the crew, formed his own and caused more ruckus on the seas than a D who ate the fruit of a God and is the new Joy Boy.
The second is because it's not a promise like being the Pirate King or finding All Blue. It's just a very inferior statement as Luffy declared that he would defeat Big Mom and it didn't.