Have you ever worked in emergency medicine or been in an accident? Someone could have been hit with shrapnel and hid it due to sheer adrenaline. People have been shot in mass shootings and had limbs bit off by sharks and not really “noticed.” It’s entirely possible to keep going/dissociate from an injury if you think that the bombing event will continue, if you’re still in danger, if you think acknowledging your wound will put you in danger. Or if you think people will assume your innocent kid that got killed was a terrorist, you might want to lie about how they died so you can have a nice funeral and people won’t remember them like that or accuse your family of being terrorists.

There’s also shrapnel from car accidents as well as shrapnel from the bombs.

I’m not actually arguing, I was answering your question about why some injuries may have gone unreported by people who weren’t Hezbollah. However, I would say that any groups of innocent casualties seems to show that the attacks were not very specific as originally criticized.