All of this is already addressed in the thread itself c'mon man
This is what I could get from the thread:
"A few words are enough to make Quanxi back down"
She has never demonstrated this against anyone ever besides random fodder marines and pirates, and especially not in direct combat. In all of her relevant interactions, she always either runs away and lets the rest of the crew handle it, or she beats people up with her staff (literally the only example I could find of this is against Miss Valentine, but that's also her literal only fight before fighting Miss Doublefinger). Every single time she used her social influencing, it was never in battle, and she just robs people and runs. If she does that here, she self BFRs cuz she's just running away.
"She used her Social Influencing against Lola"
only example given in the entire thread of her social influencing actually working on someone trying to kill her, and Lola is dumb enough to believe Nami is a man. Quanxi is significantly more intelligent than Lola, and she's also more intelligent than every single fodder character in One Piece that fell victim to Nami's SI. SI isn't mind control, smart enough people can just ignore it.
The entire story would go completely differently if her SI was good enough to actually work on everyone, even though it failed against Miss Doublefinger, Kalifa, Moria, Oars, Kuma, and literally every single person she's ever fought in the story. Nami has had multiple fights where SI was her only option, and it failed literally every single time besides Lola who is known to be unintelligent, so why would it work here?
We can analyze all of the SI examples on her profile:
Nami steals ship from pirates: She tricked them into thinking her chest was full of treasure. Obviously wouldn't work against Quanxi since she doesn't have a fake chest full of gold, nor does Quanxi care about it either
Nami pushes Johnny and Yosaku off the ship by tricking them: pretty sure if Quanxi's mission target asked her to turn around so she could strip, Quanxi's just gonna slice her in half cuz she's not stupid and it would be a completely nonsensical and illogical thing to say. You could argue that Nami's attractive enough to pull it off here since it wasn't a logical thing to say even in the moment, but again, if Nami is Quanxi's target, I highly doubt Quanxi would just sacrifice her mission just to let Nami strip. Again, unlike most of one piece, Quanxi isn't stupid and she's never been shown to let her lust get in the way of anything, while Johhny and Yosaku are significantly less intelligent and capable
Nami tricks Sanji into giving her free food: Sanji is a character who actively goes out of his way to entertain his own lust, even if it means dying in battle (see his battle against Kalifa and Mr. 2), this is a bad example
Nami gets a discount from Kureha: Here's an example where Nami doesn't even use seduction (and I don't think Kureha was oogling Nami at all during this arc), and it only worked cuz Nami had something extremely specific (key to the armory) that she can't really do here
Nami tricks weathermen into teaching her more about weather: Nami threatened to kill herself to repent, which no one would ever want... except Quanxi since she's actually trying to kill her
Again, Social Influencing isn't mind control. Prior Knowledge doesn't change the fact that Nami is Quanxi's target and therefore Quanxi will likely prioritize killing Nami over everything else.
"But Quanxi is gay"
again, the seduction works on everyone even if they weren't gay. But she's never demonstrated the ability to convince people smarter than the random fodder she encounters on a day to day basis.
SBA states:
In character, but
will attempt to win the battle. Characters will not give up of their own accord. That means
a character that is uninterested or sees no chance of winning won't simply leave and characters wouldn't simply become friends with each other. This doesn't prevent a character being made to give up, because the other character
manipulates them via things like, for example, mind control, fear inducement, psychological tricks or superhuman charisma.
Each character will view their opponents as enemies,
who they have to assume wish to cause them severe harm such that losing could have any range of dire consequences. The characters will assume their opponents have not been forced into battle. They are assumed to have decided from free will to fight and are not excused by a just cause, difficult times or otherwise exonerating circumstances. Furthermore, the situation is assumed one where the opponents are not protected by social norms or consequences, such as being a civilian protected by law.
Quanxi is in a state where she sees someone, needs to kill them, and assumes they can kill her too. Why would she give Nami a chance to say anything?
Nami also doesn't have mind control, fear inducement, psychological tricks, or superhuman charisma. Her ONLY tool is that she's hot, which isn't enough to prevent people from killing her (except against Lola, where she removed Lola's reason for killing her by calling herself a man, which just proves that Lola is stupid if anything)
Nami isn't Saul Goodman. Saul's is good enough to convince a psychotic man who resorts to violence and death regularly and threatened to "slit their throats and drag their tongues out through the slits" to just break each victim's leg. Nami's SI has never been this potent