I'll be the devil's advocate and say "Jinbe/Zoro/Franky" didn't trust Luffy's decision, while Sanji was going along with Luffy this chapter, despite Sanji being the one clashing with Drake earlier in the arc, not the other three... and Sanji just listened to what Luffy asked... seems like a right hand man to me
While the other three, they deserve some Usopp treatment in Water 7 LMAO