I think the point was that it would be a lot more interesting had it dated to a time prior to people for whom the Iliad was part of their culture were present in the region and when such artifacts would have been normal-ish

Finding american freed slave papers in a grave at Valley Forge -> ever so slightly interesting, we know those people were around there at that time.

Finding american freed slave papers in a grave outside an 1870s British encampment in Sudan -> very interesting how did this get here.

Or kind of like how finding Christian stuff in a roman grave varies a lot in implication by the year.

That would have made it all the more exciting! Although less likely.