I was referring to them having to adopt the Condorcet method to elect the prime minister. Perhaps it was an exaggeration to call that "dispensing their own political system" though. But in any case, that would mean an Arab majority Knesset and as such Arab-party coalition in the government, which could easily exclude Jews altogether.
It potentially COULD exclude Jews altogether; you are, however, seriously deluded if you really think it would be "easy" to do so.
Especially when you consider that there is no political party in Israel called "The Jews" and it is unlikely such a thing would come to exist if Israel unified with Palestine. Jewish neighborhoods will still vote for the usual suspects (Likud, Labor, etc) as would Palestinians (Fatah, Hamas, PFLP, etc). The more likely result is an alliance between one or more Jewish and Palestinian political parties (e.g. Labor and Fatah) who can reach enough common ground to form a coalition. Since the hardliners are far less likely to form common ground (
no way in hell Hamas is gonna team up with Likud), this gives space for the more liberal Israelis and Palestinians to take control of the Knesset and form a unity government.
The Jihadists would be pissed.
The Zionists would be pissed.
Loren would be pissed.
And everyone else would bake a cake.