Fwiw, I don't read any excuse or justification in parents post. The fact is that the IDF are (right now) more effective than Hamas in exterminating the other party.
What you're saying is completely true. But I like to think that most Israelis believe that the other party doesn't include the countless civilians that were killed so far and are facing dire starvation right now. Israeli people should not let their grief and their fear prevent them from saying no from those amongst them that want to do terrible things.