I'll stand on the graves of millions and preach, whether you want to hear it or not.

The tech level in your universe didn't look that different from what we had in my universe during the Annihilation War. We were up against billions of omnicidal monsters and a weaponized Galactus.. We didn't use kidnapped child soldiers, and even though it was a close call, we still won.

So I'm calling bullshit.

What happened in your world was sick and it was wrong, and there were plenty of other things that could've been done.