I mean, it's not the point, not to sound picky, because, the point is not to know whether the action is justified or not, people are better off or not.
It's because people under this rule have no power, no influence, almost no clue about it, because of the imbalance and the disconnect (of power, of knowledge, of capacity).
Such as would any creature under a powerful god, would gods exist.
But you at least expect gods to have some sort of perfection or status or narrative that could somehow justify their whereabouts.
But here, there's no god. Just imperfect, broken humans breaking other humans, imperfectly, often for the wrong, or no reason at all.
That will never make something right. That will certainly entice more hate and more evil.
That's why this kind of weapon should be banned by treaties as unconventional (which they are).
This is not war. This is ruthless domination, for better or for worse (more than often, worse).