The nuke scene was perhaps a little underwhelming visually, but I thought the sound design made up for an awful lot of that. It undoubtedly focused more on his own experience and internal conflicts than addressing the broader horror of the bomb, but given that it was very much a biopic and not a breakdown of the manhattan project - I think that fits.

I found it very impactful, it’s still occupying most of my thoughts even though I saw it yesterday.