I'm starting to wonder if Superman even read those files. If not, then he needs a slap and to be made to sit down and read them till he throws up in disgust.
He almost certainly did, because that could be the only reason he didn't try to
stop Grayven right there, merely abduct him for a minute, to lecture him about potential consequences.
This... this isn't superman. He's psychologically incapable of suggesting that you leave someone to die or be tortured for the sake of making things more convenient later on.
If the world of DC is
anything like ours, then there will be autocratic/corrupt governments that will be known, as an open secret, to sometimes disappear and/or torture people. Never mind as a superhero, as a
reporter, Clark should be very aware of that fact, yet chooses to not go overthrowing them. And I really doubt Clark thinks that it happening in the "third world" vs the "first world" (or vice versa, in this case) has any moral difference.
To try to explain his perspective, as
Lawful Good, he probably believes that doing some things is simply not under his authority, even if he had the power and his heart bleeds to help. In fact, exactly
because he has the power, he might feel he has to be especially careful to not just start rearranging the world according to his personal morality, to not risking to start a slipper slope into taking over the world. So, the exact opposite of Grayven's attitude, basically.
Also, wanting to avoid future conflict of superheroes vs. governments of the world is hardly just about "convenience". Either the superheroes win and have to take over the world, thus becoming what they feel they fought against, or the governments win over superheroes and the world is screwed the next time superheroes would have been needed.
I don't necessarily agree with such reasoning myself, but I can see where Superman is probably coming from, here.