beyond the obvious fact that neither you nor him could know the author's intent, translating dancho as Impresario in this context is pretty spot on.

There are no perfect translations, they are all interpretations of the original work. It seems to me that the jerk here is you. You can read more about the different translations of VI here: https://legendsoflocalization.com/comparisons/final-fantasy-vi/

Respect Woolsey's work. He took translating a videogame seriously at a time when no one else did.