I remember seeing the trailer on like August 2014 and when it was done remarking to my friend, "give him the supporting actor Oscar right now."
There are no two more damaging words in the English language than "Good job."
I've had good arguments about strangers on the internet disagree with me about the end of film justifying everything that came before it. The film isn't a depiction of abusive teachers in music conservatories, it's about the insane artistic determination to achieve greatness and perfection at any cost, and how the artist feels vindicated of all wrong doings if they achieve it. You think Kubrick cares that he tortured Shelly Duvall? Look at that performance.