You mean like Minfilia right?
That said none of the other characters you noted ever 'died it was fake'.
Nanimo was poisoned. She was not 'not really killed'.
Y'Stola teleported out - she never seemed to be dead.
And even Minfilia wasn't "fake killed" but called away - but I add her here because by your standard, a stubbed toe is a fake death...
People who are trying to understand what someone else is saying care about grammar... because it's how you get a clear point across...
But this wasn't a grammar issue... it was a flat out wrong issue.
If I say.... 2+2=37.5
I'm not using the wrong grammar... I'm just wrong.
In your case it was like saying... "remember back in 1861 when F.D.R was president..." and... no... nobody does... because that wasn't true.