Official? It is well known in Israel and for it's enemy that on holidays there are less people. Nothing weird or reasons to doubt it.

> But again does that make sense given how the Israeli elites feel about Palestinians? Just assume because it's a Jewish holiday Hamas will also take the day off?

No, if they did they wouldn't have anyone on the border.

Dear reader, notice how they shifted their claim from "And everyone just happened to not be at their posts" to the official story (wink wink although I offered no real evidence) is that the border was lightly manned.