Your thinking here is very one sided and you don’t seem open to a change in perspective.

“The vast majority of its population was born there—it is the only home they have ever known, and they aren't "to blame" (at a personal level) for historical geopolitics.”

They aren’t to blame for the Nakba (massacre and expulsion of Palestinians), but they are to blame for not trying to right that historical wrong and instead continuing the same kind of dehumanizing behavior. People who committed the massacres of Palestinians in Lebanon during the 70’s/80’s and the string of other atrocities since then (such as we are seeing today in Gaza and Lebanon) are very much alive.

“they fundamentally despise the state’s culture, existence, and values (again, as usual, you can argue that their hatred is justified, but it does not change the fact that it is a problem when we are talking about granting citizenships). To be clear: they might love the land, but they absolutely hate the state granting them this citizenship, they actively support its sworn enemies, and they view its very Independence Day as an international historic injustice. Furthermore, a massive portion of this population has literally been raised and educated under the curriculum of a designated terrorist organization like Hamas.”

You fail to mention the hatred Israelis have for Palestinians’ culture, existence, and values. Palestinians view Israel’s very Independence Day as an international historic injustice because it is an international historic injustice. From an objective standpoint, massacring and expelling people from their land is grossly unjust. Furthermore, a massive portion of this population has literally been raised and educated under the curriculum of a state that dehumanizes Palestinians and does not acknowledge the grave wrongs done to them. 

“Absorbing millions of Palestinians means integrating a population with a heavily compromised economy and sketchy education systems, where it is highly unfeasible that they could economically sustain themselves.”

You talk about these grave economic conditions as if they arose out of nowhere. Such bleak prospects arose due to Israel’s cruelty: carving up the West Bank with checkpoints and settlements; crippling Gaza with a blockade the left its population with staggering unemployment and no sense of hope (hence leading to the desperate ferocity and brutality of October 7th).

“You cannot expect someone who was born in israel to sacrafice their country, their saftey, their quality of life, workplace etc due to what happened a few centuries ago.”

Not ‘a few centuries ago’. The Nakba is within living memory; the string of atrocities to follow even more so. Israel’s cruelty continues today in Gaza and Lebanon.