Egypt has already declined to grant a free passage for Palestinian refugees from Gaza. The issue is not only about these refugees being unwanted in other Arab countries for some social reasons.
Arab population in Gaza is also a political tool being used by Hamas and its sponsors. If Israel manages to make the Gaza Strip Jewish, it will be a clear defeat for the Arab terrorist groups and their supporters. Naturally, they will do everything to prevent that.
The strip won't have to be Jewish only, otherwise if the Palastinians would learn to live in peace with the Jewish people, but after year's and year's of brainwashing, it's going to take one heck of a long time to generation that out of them.
It can be done though, but it's going to take the Jews then working a good plan to get it done. They shouldn't expect however that the new citizens of GAZA - after it's ultimate fall - should then become worshippers like they themselves are, but instead to teach them how to worship in peace.
These things can be achieved just like they were achieved in the dire situation or afterwards during world war two. For example - the German people weren't allowed to use any type of Nazi propaganda after world war two or use any signs or signals relating to Nazism because it was a cult created by it's leader's that would worship a man as a god.
Next Germany became a peaceful and multicultural society that has lived as such for a long time now. I'd say that the Marshall plan worked quite well back in the day. However, these things won't work if the wrong things are injected into them at later date, wherefore you have these certain types of cultures that begin to degrade the societies from within, and it begins the process of separation or separating the societies from within. Why these types of signs are being missed when they start (for example), even by what we see getting worse (right here in America), is a head scratcher for sure.
Lack of leadership or the wrong type of leadership creates these things every single time.