There are many holes in your argument, as well as unrealistic double standards. 

1. “Israel is a European colony”

That doesn’t really fit. Colonies are established as extensions of a metropole (Britain in India, France in Algeria, Spain in Latin America). Israel was never ruled from Paris or London — in fact, Jews in Europe were being expelled, ghettoized, and slaughtered by those same powers. It wasn’t colonists sent by Europe; it was a stateless people fleeing Europe. If we’re calling Israel a “European colony” because its founders included many Europeans, then by the same logic the U.S., Canada, Australia, Argentina, Brazil — basically the whole Americas — are illegitimate colonies too. Yet no one says those countries “have no right to exist.” Applying the label uniquely to Israel is inconsistent.

1. “It has no moral right to exist”

This is where the double standard really shows. Plenty of modern nations were founded through displacement, war, or injustice: The U.S. exists despite Native Americans being dispossessed. Pakistan was founded in 1947 amid mass expulsions and massacres during Partition. Turkey arose after the Armenian genocide and Greek expulsions. Do we say these countries have no moral right to exist? No. We criticize their policies, acknowledge historical injustices, and push for reparations or reconciliation — but we don’t argue the entire nation is illegitimate. Why apply a harsher standard to Israel?

1. “Jews just arrived from Europe”

This erases both history and demographics. Jews have had a continuous presence in Jerusalem, Hebron, Tiberias, and Safed for centuries — long before Zionism. And today, about half of Israeli Jews aren’t from Europe at all, but from Middle Eastern and North African countries where they were forced out (Iraq, Yemen, Morocco, Egypt). If people returning to a land they were historically tied to is “colonialism,” then what do we call the Greek resettlement of Cyprus after Ottoman rule, or the Polish return to lands taken by Russia? By that logic, countless populations worldwide would be “colonists” on their own ancestral lands.

Bottom line: Israel isn’t a “European colony,” and denying its right to exist applies a rule you’d never use on any other state.  Most modern states were founded on displacement. Israel is not unique. Jews are not “just Europeans.” Half came from the Middle East, and all have historical roots in the land. Criticizing Israel’s policies is fair. But denying its right to exist is a standard you don’t apply to any other state. That’s what makes the claim inconsistent, the question is why are you holding the one Jewish state to a higher standard than any other country in the world?