why is that?
1. the palestinians are a radicalized population, and the other countries don't want them to destabilize their own countries. if you think an israeli jail is bad, try an egyptian jail. these absurd chants you are repeating like useful idiots are in truth the chains that enslave gaza and prevent them from leaving.
2. the palestinians are a poor population with minimal access to education, which is why they're so radicalized. they are not ideal immigrants.
3. racism. it is widely understood that the palestinians are about 50% hebrew and 30% subsaharan african, as descendants of african slaves brought into the region from the arab slave trade. there are other groups that have occupied the region and contributed to the racial mix, including turks and greeks. they in truth have minimal arab admixture, and weren't even muslims until the collapse of the last crusades in the 15th century, when the muslim rulers decided to convert the remaining christians by force.
it's hard to make sense of the idea of deporting palestinians to sudan on first glance as anything other than a cynical joke, which i take it is what it actually is. but there's reasons why these people can't get out of this mess and resettle in the sinai, or on the red sea. the saudis have a massive port investment on the red sea. why not let palestinians migrate?
because they're not seen as arabs, they're seen as jews, or as africans.
there is some logic in resettling palestinians in yemen. that would coincide with the racial prejudices against them in the arab upper class.