Neville, you’re not understanding the way the Sephardim think.
They know for a fact that Moshe Rabbeinu spoke and dressed and behaved and ate exactly like they do. And the Ashkenazim are the unlicensed interlopers.
Here’s what a real live actual Sephardi acquaintance told me:
Moshe Rabbeinu lived in Egypt, right? So he was a Sephardi! Sephardim are therefore indisputably the real Jews!
Got that?