Perhaps. But it is true, though. For example, Brigadier General Thomas F. Farrell
described the first explosion thus:
The lighting effects beggared description. The whole country was lighted by a searing light with the intensity many times that of the midday sun. It was golden, purple, violet, gray, and blue. It lighted every peak, crevasse and ridge of the nearby mountain range with a clarity and beauty that cannot be described but must be seen to be imagined. It was that beauty the great poets dream about but describe most poorly and inadequately.
Major General Leslie Groves, who was in charge of the Manhattan Project,
wrote, "The feeling of the entire assembly, even the uninitiated, was of profound awe." That the effects are horrifying doesn't make the cloud any less remarkable.