https://edition.cnn.com/2024/05/05/middleeast/israel-al-jazeera-closure-intl/index.html

 As we look at Rafah, they may go in and have some initial success, but potentially at an incredibly high cost to civilians, but one that is not durable, one that's not sustainable. And they will be left holding the bag on an enduring insurgency because a lot of armed Hamas will be left, no matter what they do in Rafah, or if they leave and get out of Gaza, as we believe they need to do. Then you're going to have a vacuum and a vacuum that's likely to be filled by chaos, by anarchy, and ultimately by Hamas again.-Blinken

I believe that the need to get out is simply flawed under this conditions though. America needs Israel as much as Israel needs the United States themselves.
Nobody should be glorifying this non necessary death toll when it comes to civilians , Hamas is expected to be clumsy in handling civilian casualties in times of an organized warfare while Israel does not , that more subdues to assymetric warfare "as usual" in the middle east , the losses of civilians become a pressure handle through propaganda or failing to meet the main mission objectives On the typically side with more power it is a recipe overused after Afghanistan 1979 which someone could suggest also worked quite fine and with the fiasco US withdrawal from this same country.