Most would blame the mass murdering parent for endangering the child.
In this instance I’ll blame whoever planted a couple of thousand explosives on people all over the place and detonated them simultaneously without caring who was nearby.
Imagine one of them was on a plane carrying your mother, or one was dropping off their kid at the school your kid goes to, or at the supermarket with you behind them in line.
No one planted explosives all over the place in this scenario. We have videos of what happened, people standing nearby weren’t harmed.
Where were the explosives then? One central place?
In pagers explicitly for receiving messages from a Hezbollah controlled network. About the only thing more direct would be putting more explosives in the rockets, but that would cause significantly more collateral damage.