If Jews claim they are actual from Middle East, then why is “sand n” their first insult towards middle easterner?

as an atheist middle easterner, I want to say it’s not just Muslim but also Christian’s, Baha’is, atheist, Zoroastrian middle easterner know the truth about ”israel”, not being fan of Islam myself, however we non Muslim already have to deal with Islam we just simple don’t want another problem added to the mix, aka Israel.

anyways my question is, I’ve noticed Jewish people from ashkenazi to sephardic, etc cry and badly claim they have traces back to israel, yet arguing with some over the topic israel, their first insults is sand N, so considering israel is the hottest country in Middle East and half of the country is full of sand, kind of their subconscious showing they know they don’t belong in Middle East.
If Jews claim they are actual from Middle East, then why is “sand n” their first insult towards middle easterner?
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