I’m saying that anyone calling children “just collateral damage” is evil

If they are, in fact, collateral casualties to a military action, why is that “evil”?

Doesn’t that depend on whether the military conflict itself is justified? If Ukraine strikes a Russian weapons depo and it unbeknownst to them happens to be Take Your Vatnik to Work day, they’re likely to wipe out at least a couple of families. Is that truly “evil”? Isn’t that just an unfortunate tragedy in an ongoing tragedy called “war”?