Besides, even if there were other places to go, that's literally just "Well what about the other Arab countries?" What about them? Their people are theirs, people in Palestine are of Palestine, I'm in California, I'm Californian. That doesn't mean I don't work to decolonize where I am.
It does mean, though, that it's where I live, where I come from, there's a unique culture and population (in California there are hundreds just in LA for example). But I fight here (doikayt) for liberation and freedom of everybody. Jews because I'm Jewish, everybody else because we're humans.