So... I may just be overanalyzing but Sanji has seemed more Simp than usual this arc. I'm not saying this in a negative light, but where he's usually emotional this arc it seems amplified. Like opposite what he thought the mods would do, but also in that he'd allow Lillith or Stussy or Robin to walk all over him.
Like I said probably overanalyzing as all hell, but part of the modifications are meant to be obedience to Judge, ... only Judge isn't here and there's such thing as the power of psychological suggestion... so what if the mods mixed with his usual simpness and opened him more to being I don't want to say brainwashed but.. I guess accidentally dominated?
It sounds crazy and like drawing at strings just to have Evil Sanji I know. Except, Oda loves to foreshadow, and Sanji's Shadow being what it was (a dog) but controlled to be evil just makes me start to wonder...