I think we have in fact pretty strong reporting that at least 2 children were killed, and while the explosions and payload were nowhere nearly as devastating as a grenade, they were still much bigger than a firework mortar (which themselves have killed children).

I think a stronger argument is that in the aggregate, the devices overwhelmingly targeted combatants.

There are videos where the surrounding people were hurt by the pagers, so, what's the explaination for that?