Because of the bounty?
M8, Monster Trio will never NOT be a thing, no matter the bounties.
Considering Sanji's record of operating off the record (Mr Prince, Sea Train solo mission+opening the Gates of Justice), Stealth Black hiding his identity), it is what it is. :P
Btw, until the 330M bounty, Sanji never even had the 3rd highest bounty in the crew.
Having a high bounty would definitely be dope as fuck, but having this "under the radar" dynamic he has, it's always been one of his traits. And I love it.
A real Sanji fan would understand that, you fraud.
also, don't believe anything until spoilers drop. Just enjoy the chaos