It’s just the difference between the “leftists” who are okay with an ethnostate perpetrating an ethnic cleansing (Israel), and the leftists who aren’t.

Far as I'm concerned it's ethnostate vs ethnostate. Although I question how a diverse country can be an ethnostate.

The ruling party of Israel and most of the other parties in the government are descended from organizations that literally described themselves as terrorists, and butchered the population of Palestine since the early 1900s.

Both regions have these roots though, with Gaza still having a terrorist organisation as its government.

And, get this, the dominating organizations during this era aligned themselves with Nazism – the Lehi (a faction of the Irgun, modern day Likud – Netanyahu’s party and Israel’s dominant party) proposed an alliance with Nazi Germany as they saw Great Britain as a larger threat to Jews.

again, both regions did. The region at the time was a proxy war between Axis forces and Allies. Israel later sided with Britain, and the Palestinians later sided with the Axis

The area didn’t just go from its population of 90% Muslim and 2% Jewish in 1800, to 81% Muslim and 8% Jewish in 1890, to 32% Jewish in 1947, to 89% Jewish in 1948 (the year the Nakba/ethnic cleansing of Arabs started), using kind words and diplomacy.

Hey! You're leaving out the UN resolution to establish two states. Jews had to flee Palestine because the League of Arabs declared war on Israel. To this day, Jews still can't find a home for themselves in arab nations. It was also Palestine and the League of Arabs that refused the two-state resolution. So don't be implying there were no kind words and diplomacy.

Israelis the weapons to blow up a whole lot of natives.

uhhh, you do realise that Jews were also native to the area, right? Like long before Muslims colonised.

It is a state that is built upon, and cannot exist without, “Jewish supremacy”. It’s in the constitution, it’s in the law, it’s in their flag, it’s in the Muslims & Arabs in the country not having the civil rights of Jews, the entirety of Israel exists specifically to be an ethnostate.

Can you prove this? From what I've read about their laws, there's nothing mentioning jewish supremacy. That is unless you consider the illegal settlements in the West Bank to be legitimate.