The clay tablet was just the Email of those days, would you believe everything that is sent by email, would you ? The people even then did not value them, many of these clay tablets were found where people of that time used them for landfill and as foundation fillers for their buildings. It is a great mistake to revere writings just because they are old, in fact because they are old, we do not know who wrote them, when and where they were born, exactly when they wrote them, where they wrote, who copied them, who sold them, who paid for them, who the authors worked for, who their sources were, etc., or any of the things you would expect with a modern book. So I ask you how does that effect their credibility?

6 minutes in and he starts praising Zacariah Stichin Nooooooo thank you
Dr, Stichin (doctor of economics, not history, not archaeology not anything relevant to his claims) is a notorious Pseudo Scientist, fraud and charlatan, who has been peddling this unsupported and debunked twaddle for years so as far as I am concerned that is as much time as I am willing to waste on this rubbish.

Writing something down in a book (bible, quran, gita) or on a clay tablet is making a claim and is neither proof nor evidence of anything. It is just a claim that must be supported by evidence, facts and data to be considered.