It was so so so so bad. So boring, bland, lacked emotions despite the huge potential of showing how Oppenheimer could have struggled with the terrible creation of the bomb. That was an idea in this movie that could have elevated it, but it was not developed. Some spoilers ahead.
The movie starts with chapters, 1 and 2, but Nolan completely forgets about them after 10 minutes as they are not mentioned in the movie again. Confusing. The audience grasps the idea that the movie will discuss Oppenheimer's life through "stages", from his later trial and Straw's senate hearing. But this method of telling us the story is messy, as Nolan dismisses the early years and brings us this idea that Oppenheimer is a psychopath, almost murdering his own professor! That was odd.
Then the complete madness of Oppenheimer's sex scenes with Jean Attlot, which, by the way, is never mentioned again after she dies. Her impact on Oppenheimer is just one scene of him crying and his wife telling him to get it together. And he does? Just like that?
About his wife, Ms.Oppenheimer, what a disaster. Emily Blunt was either crying, or drinking alcohol, or both. She had no bearing in this story, other than reminding the audience how bad women were treated back then.
There were poor visuals. The scene where they test the atomic bomb built up tension, but not enough. Here's why: we all knew it was going to work. The movie, instead of touching on the deep emotional meaning of the creation of the bomb, overanalyses the politics of the military. Instead of TELLING us that Oppenheimer regrets what he did, Nolan should SHOW us.
And on what Oppenheimer he did... what DID he do? There was very little scientific information in this movie. Why was Oppenheimer so important to the Manhattan project? What did he do other than draw four circles and two lines on a board? We dont even know what Oppenheimer exactly studied, or why Bohr was important to the project.
Overall, this was a deeply terrible movie. Long, boring, some VERY peculiar scenes. And I expected much better. Cilian Murphy did a good job but was massively let down by the person who directed this movie. Barbie was much better and, surprisingly, had a deeper emotional connection with the audience.