I am aware. Nolan obviously wasn't trying to make a 100% faithful adaptation of the poem. The changes and the pulling from other sources are used as part of the larger story he is telling here, and the subtle social commentary.
I enjoyed it. Some people criticize it for being a bit too lenient on Oppenheimer's involvement with the Communists, but IIRC Nolan did his research before the full extent of Oppenheimer's involvement was known (IIRC, the historical understanding was that he was a 'fellow traveler' and had communist sympathies but never actually joined the party, but it came out shortly after the movie that he did briefly join the party after the film created increased historical interest/scrutiny in Oppenheimer).
However, I think the movie is overall fair at portraying him as a brilliant and well-meaning but arrogant and neurotic wreck with an absolute clusterfuck of a personal life.