After looking at the author's bio, I don't think that the author of this article is particularly specialized in the Middle East. They probably have the same level of understanding of the area's ethnography as most Americans: an Arab is anyone who isn't an Israeli.
Therefore, Persians, Assyrians, Kurds, and Lawrence of Arabia are all Arabs. It's unclear where Arab Israelis fall in this taxonomy.
Therefore, Persians, Assyrians, Kurds, and Lawrence of Arabia are all Arabs. It's unclear where Arab Israelis fall in this taxonomy.