Feynman made it way more interesting in his book without needing to create fake villains! You could make a whole movie about his shenanigans alone.
If this is how the general public reacted to a movie like Oppenheimer, its impressive how well they actually did viewer wise.
This is wildly subjective, different people watch movies for very different reasons.
And I have the exact opposite view! hah
The Barbie movie felt like a series of clips to me. Not a coherent movie. I also dislike musicals, so maybe personal.
Also despite Oppenheimer being about The Manhattan Project, The Barbie movie felt "too american" for me with weird Twitter references to "The Znyder cut?". (How will that reference age in 2 years?)
Oppenheimer just feels like expertly crafted cinema. I truly got lost in it and the story. The first 20mins felt like 1h in a good way. Truly masterful.
(Well, the primary goal is to make money, but they do that by entertaining people.)
I suspect a lot of people even plain didn't see the Barbie movie because they were more comfortable watching a movie that skirts over criticising American fascism/authoritarianism of the 40's and 50's, than watching a movie that treats modern American culture without kid gloves.
If you've got a scale that goes from equal rights direct democracy on the left to dictatorial fascism on the right, then America was not quite fascist in the sense that they still had indirect partly represented democracy. But the way minorities, other-gendered, other-lifestyled and the politically deviant were denied representation and other basic rights it was definitely on the fascist side of the spectrum.
What's impressive about the movie is that they managed to create drama, artistry and tension in what's fundamentally something you can't really make a movie about because in the end it's just a story of some physicists that successfully accomplished something without anyone really opposing them in any material way.
I think that's laudable and interesting. But if you would judge the movie just based on its entertainment value, I don't think it would score very high. The Barbie movie, which I just saw 2 weeks ago on my TV was clearly a better movie on I'm pretty sure every aspect, and you could tell it was in the first minute.