Plenty of Arab Mahometans carry Israeli citizenship too.
He is gay and married to a dude and teaches at the Hebrew University in Jerusalem. I think it’s a safe bet he is also jrwish and not Arab. But stranger things can happen.
He’s Jewish, at least by the standards of the State of Israel. Maybe his mama was a Christian or Muslim, but that would take research.
Secular Israelis don’t like digging that far, as Sharon and Bennett might be called into question.