Because we started talking about whether it was right for Sanji to not trust Luffy in the context of Nami's reaction to it. I said the only person who didn't understand the circumstances of the situation was Sanji. By admitting he was at fault for not trusting Luffy, you admit that he didn't properly understand the circumstances of the situation and Nami was right to do what she did. Which is also why Sanji ended up apologizing to Nami specifically because he knew he was wrong.
Dude, think it like this.
There's someone holding your family at gun point.
This person tells you that you must obey them or they will kill everyone you love.
Your friend appears inviting you to go out.
The dude with a gun might pull the trigger right there if you are interrupted.
You tell your friend that you are not feeling well.
Friend starts insisting.
Person gets impatient.
They shoot your family.
If you knew this could happen, would you say that pretending to be mad at your friend and telling them to fuck off just so they get the hell out of there as fast as possible a "wrong decision"?
Let me continue.
Your friend realizes something's off because they know you.
You get desperate and decides to beat him in order to make him hate you and leave.
Your friend still refuses to hate you.
You burst in tears because you can't say shit and beat him.
Later on, you eavesdrop the person with a gun saying he will kill you and your family either way.
When the person with a gun isn't watching you, you meet your friend.
You apologize for hitting him.
You then explain why you did it.
Let me repeat it. You apologize either way, because, regardless of the reason, you beat the shit out of your dear friend.
Friend says he forgives you and offers to help you either way.
Please.
please tell me how the fuck any of this was "wrong".
It simply was a hard situation and that's it.