No, the rational response for dealing with people who want to genocide you, and can't possibly be reeducated, is to genocide them first.
Letting the war drag out while they "minimize civilian casualties" just creates daily negative press for Israel. If they did a 100% kill of Gaza, it would be negative press once, and then it would be over.
I've come to the unfortunately conclusion that some groups just can't be treated by Western standards of justice. That just invites them to exploit it as a weakness.