The text changed in the museum refers to the origins of a specific line of Egyptian kings around 1650 BC. I think neither the history of the Philistines nor the history of the kingdom of Israel is relevant to this.

As to the question if they have the history of Palestine/Israel/Canaan/Levant somewhere else in the museum? I don’t know. If not, they would have a serious knowledge gap there. That topic deserves its own space, not a footnote in the Egyptian section.