Again, I'm really not understanding your offense here. You came to me to disagree with something I posted. And as it happened you were wrong. I told you so, and you dug in twice with more incorrect takes. That's just... discussion. And frankly pretty polite discussion even by the standards of this site (which is pretty polite!).
There's no etiquette that demands I not tell you you're wrong.
There's no etiquette that demands I not tell you you're wrong.