I notice that I received many thumbs down. The movie was recommended by longtime tradcat who told me about movie.
Well, the movie ends with what is effectively the Gates of Hell triumphing over the Catholic Church.
The heretical priest orders the monks - the last orthodox Catholic clerics on earth - to stop offering the Latin Mass and to deny the dogma of the Real Presence. The Father Abbot, who has lost his faith, falsely places the virtue of obedience above the virtue of Faith and obeys the order to apostatize, and orders the monks to do likewise.
In the end, defense of the Catholic Faith is shown to be pointless and irrelevant, blind obedience is portrayed as virtuous and despairing existential terror wins the day.
So, while it might be a superficially attractive film for trads because it shows the NO in a bad light, the film does not follow that premise through by arguing on behalf of Catholic tradition. I'm not sure what it's arguing on behalf of, other than despair and agnosticism.