I mean you are fundamentally making an argument against war. Which I agree with. When waging war someone innocent is always going to get caught in the crossfire, which is one of the many reasons war is bad.
But to call all acts of war terrorism, and all terrorism an act of war, is to pretend words don’t have meanings.
Yes, and when we bombed Germany in WW2 we killed hundreds of children. War is bad. Terrorism is bad. But they are different things.