What is logical about Sanji's genetic modifications having a one and off switch?
There is no logic to it.
More importantly, there is no evidence for it.
I posted the panels multiple times. Sanji demonstrated the same kind of speed and resilience without the flip.
You're the ones going off conjecture and feeling, not evidence.
Perhaps y'all just want to believe Sanji can dog walk a Seraphim without "turning on" those enhancements while his captain and counterpart are faring considerable worse in 2v1s.
It's a nice thought, but that's all it likely is.
Sanji has been in a heightened emotional state every time the flips happen. That doesn't mean anger and only anger.
He hasn't been in a heightened emotional state every time he demonstrated the speed or exoskeleton.
I don't know where you get off accusing me of ignoring shit when I'm the only one in this thread looking at the entirety of context, not cherry-picking what suits me.
Broski you gotta taking the piss.
Main difference between Sanji and his siblings aesthetically was the eyebrows which was an indication that Sanji's super genes hadn't been awakened yet. When he awakened his genetic abilities on Wano his bloody eye brows flipped serving as a visual indication of is gene awakening.
This is SBS 105 with Oda telling us the obvious.
D: My question is about Sanji's eyebrow. In volume 102, chapter 1031, Sanji's eyebrows were reversed, but in volume 103, chapter 1044, they're back to normal. Why did they change back? P.N. Rooftop
O: You noticed it well. Yes, his eyebrow does change. Going back to the
Whole Cake Island Arc, all of Sanji's siblings were born with superhuman abilities and strong skin called an "exoskeleton", due to the
Lineage Factor manipulation performed on them. However, only Sanji was born as a normal human due to his
mother's resistance. Look at his brothers and sister's eyebrows.
Since Wano Sanji seems to be able to voluntarily change the shape of his eyebrows with the shape of his eyebrows taking the Germa shape when is using Ifrit in particular which computes as Ifrit was born from Sanji combining his armament with his exoskeleton.
- Sanji's eyebrows were in the Germa shape when he defeated Queen with his super abilities.
- Sanji's eyebrows were in the Germa shape when he attacked Luffy alongside Franky and Bonney in that gag scene on Egghead
- Sanji's eyebrows were in the Germa shape when he attacked the Cat/Lion beast to save Nami alongside Luffy and Zoro at the start of the Elbaf arc.
Then there's situations were Sanji is manifesting the exoskeleton in which he has his eyebrows flipped.
This was the case when he blocked S-Shark's punch
So it doesn't really take a genius to figure out that Sanji's eyebrows change when he's manifesting his Germa abilities.
The examples you posted are very speculative.
For instance the example you gave with Sanji destroying Road's net alongside Zoro was not named so it's not obvious that he's using Ifrit Jambe. Even the example you gave with Nasujuro biting Sanji and him not showing any notable physcial damage in the panels after is not really clear either. Even if Sanji was not using the exoskeleton in that moment, he posseses enhanced healing abilities in Germa mode so all it'd take to heal that bite damage is to switch back into his germa mode and he'd be as good as new.
To go even a step further we have panels of Sanji attacking S-Shark with his eyebrows filpped and not and there is a clear difference in showings in both cases. He absolutely shit stomped S-Shark with his eyebrows flipped.
So this notion that there is no evidence for Sanji's eyebrows flipping when he's in a Germa mode is asinine.
Again the eyebrow flip serves as a visual indicator that Sanji is using his exo abilities which is a good ting as it tells the users when he's using it and ths is a common theme in fiction in general. There are visual indicators to tell the viewers that a character is using a particular form. Is the case in DBZ with the super saiyan forms and Gohan's ultimate form. Same with Luffy's Gears and Zoro's Ashura.
If there are a few scenes where Sanji seems to be using his exo abiltiies without his eyebrow flipped then it is most likely a drawing goof from Oda or his team.
The notion that you think Sanji's eyebrows simply flip based on mood is more logical than the above is insane to me.