For one thing, I would have to question whether their representation of the 10 Commandments:
could possibly be verified.
As it happens, I had opportunity to deal with Orly Goldwasser's admirable work in Biblical Archaeology Review {{How the Alphabet Was Born from Hieroglyphs, Biblical Archaeology Review 36, No. 2 (March/April), pp. 4053, 2010}} on the Paleo-Hebrew Sinai inscriptions... admirable but unfortunately duplicating the work of I.J. Gelb, 'A Study of Writing', Univ. Chicago Press, 1952, 1963.
Goldwasser's main graphic can be found in Gelb, pp 122-125, taken originally from Martin Sprengling, 'The Alphabet', Chicago, 1931, p. 28.
All this to say that the Paleo-Hebrew Sinai script, perhaps the beginning of a true alphabet, deserves more attention and the 10 Commandments graphic is quite a leap of interpretation - in my view - but certainly provocative.