> The general idea is that there is a belief that non-jewish people worldwide are thinly hiding a goal of eradication. A lot of Jewish and Israeli people are taught that from a young age

It is reality, even if you aren't taught that from young age (I don't think I was), you will get the memo from reality. There is a very sizable coalition of radical Islam together with the hard left to "end Israel", "from the river to the sea", "end Apartheid" or whatever they choose to call it. It is a global movement counting billions of people. The rest of humanity doesn't really care either way, they have their own problems to think about.

And while it is not necessarily "eradication" in the physical sense (though when calls to destroy Israel come from the mouths of extreme Muslims who support Hamas and Hezbollah it sure sounds like it), but even when the talk is meant as a peaceful end to Israel - most Jews have no illusions they will be able to keep living in Israel after that. The idea of national destruction is very unappealing to Israelis, just as it is unappealing to Palestinians or people living in Greenland.