Why is it so uniquely bad for Palestinians to seek refuge in nearby/other countries?

I'm aware of the arguments on both sides of this question, I just don't see why the answer for Palestinians is different than for all other peoples.

How dumb would I sound if I said that Poland, Romania, Czechia, Germany, etc. shouldn't take in Ukrainian refugees because Putin probably won't give back Eastern Ukraine?

And there's far more certainty of Russia annexing and repopulating Ukraine than of Israel doing the same to Gaza. I mean Putin's done it unilaterally already; he's forcefully deporting Ukrainian children and dispersing them across Russia, he's held bogus elections, and he shows no signs of stopping. With Israel, resettlement of Gaza is pure speculation as of now — and from what I see it's actually contrary to Israeli goals and interests so it's far less likely to happen. A conference about resettlement attended by MKs and religious leaders means very little until they have the go-ahead (or at least the wilful ignorance) of the Knesset and IDF — which they currently don't.

So why did the world decide for Gazans that they must stay under constant shelling and drone strikes just because they might not get their house back? Why not at the very least give them the option? And if it's truly what they want, is that not the most glaring example of a cult of death? If that really is their wish, why? Why value land over life so excessively? Any other oppressed people would rather move somewhere else and maintain their dignity and quality of life over staying put and undergoing what can only be described as an (at least) attempted genocide. So why is Palestine any different?