This is faux neutral bothsidesism.

The West Bank and Gazan Arab narrative denies a Jewish presence before Islam despite the Dome of the Rock built on top of (as in later than) the western wall and a voluminous archeological record documenting a Jewish presence in the land going back at least 3000 years.

The Israeli narrative that denies the existence of a Palestinian national identity separate from other Arabs quotes the "Palestinians" own leaders--Cairo-born Arafat, Jordan's late King Hussein and PLO commander Zuheir Mohsen--to prove that it's factual. How are these statements "pro-Israel propaganda"? What leads you to "westplain" them away instead of taking them both literally and seriously?

When one side confesses that its narrative was a purely tactical invention, and that its ultimate goal is to eliminate the demographic presence and sovereignty of the other ("from the river to the sea"), who should you believe? The question answers itself.

Generic bothsidesism merely subsidizes the West Bank and Gazan Arabs' delusion that 1948 and Jewish sovereignty are reversible and that 7.3m Jews will return to where they came from. This nonsense is as delusional as Japanese Bushido imperialism ever was, and requires the same treatment as the US administered to postwar Japan.