Yes... It is
>>But displacing 1.7 million people[3] is disproportionate.
This is where we disagree. These was no way to do it any more surgical then they did. All militaries soften a entrenched enemy with Ariel bombing. That is standard practice.
People that claim "they should have just killed Hamas only" are highly ignorant of military tactics and have unrealistic expectations for military conflict
If bombing was off the table, then you are effectively saying there is no reponse what you would find justified