You have a point, but as I recall, the Palis aren't really their people, either. They were an ethnic faction that tried to overthrow the Hashemite monarchy, no? They're defeated refugees from Transjordan with no history in Israel.
Jordan wants the Pali mafiosi to stay as Israel's problem instead of becoming theirs once again.
last time under the Fat Arab, Jordan killed 10,000 of the Southern Syrian scum, aka Palestinians, expelling them.