Whether you - or the Jordanians - like it or not Jordan is a majority Palestinian country.
That hasn't stopped the Jordanian minority from carrying on as though the Palestinians living in Jordan simply don't exist, and in many cases refuse to even confer citizenship on them because they cling to the deluded notion that a child who was born in Jordan and has known no other country is going to be perfectly happy being shipped off to Israel or Palestine because of something that happened in his grandparents' time.
Israel's right wing clings to a very myopic perception of a monolithic Arab people that is universally intent on destroying Israel and all Jews at all cost because they obviously have nothing better to do with their time. To be "an Arab" means nothing more than to speak the Arabic language, in the same way that Hispanic peoples are united by Spanish and Lusitanic peoples are united by Portuguese. Arabs do not share a common religion (some are Muslim, some are Christian, some are even Jewish); they don't share a common race or ethnicity (it's hard to mistake a blonde-haired, blue-eyed Lebanese for a brown-skinned, kinky-haired Somali). Telling a Palestinian to go live in "one of the other Arab countries" is about as logical as if the United States occupied part of Mexico and told the Mexicans living there that they shouldn't have any problem going to live in Peru or Spain.