The source is even weirder. It comes straight from The Hebrew University of Jerusalem, and it says Jewish Israelis have a low power distance, while Arab Israelis have a high power distance. This resource here only counts the value for Jewish Israelis, and excludes Arabs.

…maybe the Arabs scored higher than the Jews because the Jews think they’re living in a land of freedom and equality, while the Arabs are actually experiencing the inequality in the country. It’s easy to think everyone in your country is equal when the bombs are pointed at someone else.

I would also be curious to know how many Mizrahi Jews the study interviewed. If you only interview Ashkenazim, you’d get a very different picture than if you ask everyone.