I have often heard it claimed from many Orthodox that such and such Western Father and/or theologian misrepresented such and such Eastern Father and/or theologian because said Western Father and/or theologian didn't understand Greek.
I recall Augustine stating explicitly that he didn't understand Greek well, if at all. Quite a problem, when at the time most of Patristics were in Greek (or Syriac, which Augustinte didn't know either).
Do you think that all (or many or most) Western Fathers and theologians didn't/don't understand Greek or that in order to properly understand Orthodox theology one must be fluent in Greek?
Some demonstrate a knowledge of Greek. But many were dependent on Latin translation. As having to know Greek, St. Anthony knew Orthodoxy well enough, and he didn't know a word of Greek. Ditto I believe St. Ephraim.
If so, would you likewise think that all (or many or most) Eastern Fathers and theologians didn't/don't understand Latin or that in order to properly understand Catholic theology one must be fluent in Latin?
On another forum
we had a discussion on a silly article on the canon regarding jurisdiction at Nicea I. It revolved around the Greek, the ultramontanist critiquing the ancient Latin translation. So no, you don't need to know Latin.
Latin Romanian does quite well for Orthodox theology, e.g. distinguishing it from the filioque quite well.