"They are pairets" argument doesn't work on every character, you can make that argument for Ussop or Nami but not for Chopper or Sanji, there are things that have been imbedded in characters that contradict that.
For example:
- Would Luffy give up his hat for a power up? Fucking no.
- Would Zoro give up wado-ichimonji for a power up? Hell no.
- Would Sanji give up his principles for a power? Oda thinks yes, for some fucked up reason😠😒.
The raid suit
CONTRADICTS every, single, aspect of Sanji's character. Sanji is not Sanji anymore, he's different, he's a completely different character compared to pre-timskip.