Yeah, but the further back you go the less useful it becomes. If you look before Israel you find the British Empire, the Ottoman Empire and the Roman Empire; two of these don’t exist anymore and the last doesn’t really exist anymore.
The choice of which time range to include isn’t that arbitrary, there are pretty significant markers that make the previous state of things a lot less relevant. When studying french politics, it’s not useful to go back further than the 1789 revolution because that event changed so much that the previous reality doesn’t matter anymore; similarly, the foundation of Israel changed the power dynamics in the area significantly enough that you can start there. Remembering the previous events is useful for context but won’t change the conclusion.