My own two cents about Oppenheimer: good to very good overall. I enjoyed it.
Nolan is a director with a specific set of what I consider strengths and what I consider weaknesses. I like his strengths, and I'm fine with / used to most of his weaknesses.
I will comment on the sound thing, though. Yes, the movie is very, very loud (I saw it in a laser-projected "fake" digital IMAX, so presumably the sound was close to what Nolan wants). Nolan's recent choices in overall sound design are one of the few weaknesses that I'm not exactly fine with. It's not merely loud in the places you'd expect it to be loud (e.g. the big kaboom), but also at seemingly other random bits, including scenes in quiet meeting rooms.
He seems to have become enamored with sort of flattening out the dynamic range of his movies, in a way. The dialogue, music, and ambient noise / sfx are all competing and jostling with each other over a limited sound space. He seems to view it as a daring way to treat sound in movies. I just find it irritating.
I listened to the soundtrack on Youtube after watching the movie, and it's quite good. I couldn't enjoy it as much in the movie, because I had to concentrate mental energy on hearing dialogue, while being shell shocked by blasts of sound in unexpected places.
In terms of ear damage, the effect of watching this movie is probably only a step or two down from attending a (pop) music concert in a stadium, lol.