In reality, it's not even clear if the IDF will occupy Gaza permanently after the war, let alone that internally displaced Gazans won't be allowed to return to their homes. At least the 2005 disengagement suggests Israel is not interested in permanently occupying Gaza.
So, there's no evidence of mass emigration from Gaza and in reality evacuation of civilians from combat zones is common. But when @Pants-of-dog starts pushing this baseless narrative to provide post-hoc justifications for the October 7 massacre, he gets offended and demands proof.
Gaza is a prison, there is nowhere they can go.
You need to realize that what both sides are doing is terrorism.
You should also know there is nowhere that is safe, that starvation and disease have begun.
When this started, I guesstimated Palestinian deaths at 100K to 200K. That's roughly a hundred times what Israel suffered, or more.
But when I look at the actions and rhetoric coming out of Israel, I worry the numbers could go even higher, which would be mass murder.