^ Superman might be the ultimate paragon of superhero-ness... but if he shot a widespread heat-vision blast to empower every superhero to be immune to the Great Darkness and even free Deathstroke (who was the focal point of that power), even the most hardcore DC fan would've rolled their eyes.
Yet, in the climax to Dark Crisis, Black Adam did just that with his lightning.
And that was before the film was even released.
Past may not be precedent and, we'll never actually know... but that was the most nonsensically forced twist I've ever seen in my life. Be happy that Black Adam didn't make over a billion $ like Aquaman 1 did. Otherwise, you would've watched Dwayne Johnson apply the Rockbottom to Henry Cavill on-screen.