Lol
@BleakAsh in his feelings. Weak Ash. Boy lemme show you the manga and let's see what you have to say:
You prove my point: I never said anything about Caesar being important to them. I said that Caesar himself had to be captured by force... because Sanji and the others wouldn't rescue him, and vice versa. Capone had to force Caesar as a separate captive from the Straw Hats no matter what happened to Sanji because the deal with Caesar was a separate matter.
and no, Sanji wouldn't be leaving the castle. Don't be like these Sanji boys, Oda did a good job with Capone. Everyone bitches about Haki being too important but here's this dude clever enough to take a strong Haki user without having to get his hands dirty at all
figured out Sanji wouldn't out his own safety before his friends
And reassures him that he's not fucking around.
Of course Sanji never lost autonomy and could have tried to fight or leave, but aside from Capone's present threat he also had to "settle things with them" and that still has nothing to do with Baratie or okama