TFA is pretty light on information and implies that most of these scripts were forgeries. I think one damning detail that supports this is the fact that all of

TFA is pretty light on information and implies that most of these scripts were forgeries. I think one damning detail that supports this is the fact that all of these supposedly pre-historic scripts have square aspect ratios and just happen to be written top-down right-to-left in the same way that modern Japanese was written in at the time of their "discovery". A lot of them are also surprisingly neat and geometric for scripts that would predate paper/typography.