Hebrew as a written language only goes back to 1200-1000 BC.
Both of those statements are based upon suppositions which are open to serious question and, in my opinion, wholly insupportable.
Furthermore, such assertions (admittedly part of the "revealed orthodoxy" among skeptical professors who hold anti-supernatural presuppositions), belie a parochial and condescending cultural superiority towards the ancient Israelites, who are assumed - with no direct evidence - to have lacked written language until later in their history.
Clearly the written language of the early Hebrews developed just as every language has developed (including the English language). Thus, the classical Aramaic script of today's Hebew Bible developed out of earlier scripts, but that certainly does not imply that the Israelites lacked written language. To claim as much would be to hold a very weak position, as continued archaeological discoveries can only disprove such a belief, and are in fact doing so in contemporary Israel, where earlier inscriptions are being discovered.