George Habash was Israel’s absolute enemy for decades, the embodiment of evil, the devil incarnate. Even the title “Dr.” before his name — he was a pediatrician — was considered blasphemous.
Habash was plane hijackings, Habash was terror and terror alone. In a country that doesn't recognize the existence of Palestinian political parties (have you ever heard of a Palestinian political party? — there are only terror groups) knowledge about the man who headed the Popular Front for the Liberation of Palestine was close to zero.