....."The Jordanians took care of the Palestinians as best they could in refugee camps".....
Most Muslim countries do not want the Palestinians in their country. They are the extreme in violence and Muslims know this. The Palestinians are the majority of suicide bombers and Muslim leaders often recruit them for the "attacks" they want done, then reward the families monetarily when they offer their kids as suicide bombers.
They love to train their kids to kill as terroists...Palestenian 'summer camp' for kids
“Most Muslim countries do not want the Palestinians in their country.”
True. Jordan WAS different because almost 70% of Jordanians are actually Palestinians. IOW, the Palestinians bit the helping hands of their own tribes and families.
After the 1970 attempted takeover by Arafat and his minions, no more Jordanian hospitality extended, same as the rest is f the ME, as you mentioned.