You're comparing a Mexican who made the decision to cross a border yesterday, or last year, or a decade ago, with say a Palestinian man born in Nablus 75 years ago, whose family has been in Nablus for centuries? With a West Bank settlement which seized land next door, the Jew from Brooklyn who just moved in yesterday, and who is in a West Bank settlement, the Jew can have a Knesset vote but the Palestinian can't because he's not a Jew. Comparing the Mexican to the Palestinian is a laugh.
Then you say Palestinians are separate so should not be in the Knesset. The West Bank settlements and IDF in the West Bank belie this. Israel voting in the UN to deny Palestinian statehood belies this.
Plenty of statements from Netanyahu and the ruling Likud are that the West Bank was annexed.
Also Israel used to "secretly" fund Hamas and Hezbollah as a bulwark against the PLO, PFLP, George Habash etc. That has come out over the years, it mainly came out in the US in the 1980s when Israel and the US were caught arming Hezbollah and Iran (Iran-Contra), but other dribs and drabs came out over the years. The PFLP and elements of Fatah and the PLO were always the main enemy, and Israel has always opposed the secular left vehemently and sometimes supported Hamas. So Israelis condemning Hamas carries little weight.
Also, Israel has a large and rapidly growing population of Jewish religious fundamentalists who control ALL marriages in Israel with a Jewish fundamentalist take, and in their communities those women have to cover their heads and shave off their hair, being gay is verboten etc. Israel has a large population of Jews like this.