That being the case (maybe it isn't!), there are two big problems with your strategy:
1. It isn't possible. They're not going anywhere.
2. It's incoherent. There are very few countries in the world with a morally-hygienic claim to their land. Certainly, with the possible exception of Egypt, none of Israel's neighbors can! They're all of them creations of France and the UK.
Israel can be disbanded just like South Africa was disbanded. It has less support than ever before politically.
South Africa wasn't disbanded, not even close. Apartheid ended more-or-less peacefully; non-whites were given the vote; and more-or-less democratic elections have been held ever since.
1. Israel has in fact immense support, far more than the South African government ever had.
2. Apartheid South Africa was a system of minoritarian rule, which does not exist within the 1967 borders of Israel (further, Arab Israelis have nominally full citizenship rights, and in fact fight for the IDF; they are a minority, unlike the victims of Apartheid, but they're also not living under an apartheid system).
3. For a majority of Israeli Jewish people, there is no other place in the world for them to go. There is no prospect of a negotiated settlement that forecloses on a Jewish state. Their BATNA is war. That wasn't the case with the Boers.
In these kinds of discussions I feel like people conflate the situation in Gaza and the West Bank with that of Israel proper. Continued Israeli occupation of Gaza probably is untenable! That occupation will eventually be disbanded, the way South African Apartheid was. But here we're talking about the entire state of Israel. Like I said, start with Texas, because that'll happen first.
It isn't formal, but Arabs are marginalized and discriminated against. In West Bank, E Jerusalem, and Hebron, all that supremacy is dialed upto 11.
> Israel has in fact immense support
Fear and intimidation isn't support. Besides, I don't see this support lasting long outside of the US and Germany if the Oslo-process continues, which it will because for the Israeli right Judea and Samaria are too good to give up.
> talking about the entire state of Israel
I think folks mean the one-state reality but not total exodus of the Jews, though, it might come to pass if they let their guard down, now that there's genuine animosity to fuel a feud for another century.