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.
Before that, Egypt was mostly been ruled by invaders since the end of the New Kingdom around 1000 BCE.
Basically, with few exceptions Egypt was not ruled by a indigenous ruler for about 3000 years until Nassar.
Frankly I can understand that: Homer really did smash out an absolute banger with Iliad. I might ask for a copy in my grave too, when the time comes.
The whole point of the article appears to be that when civilizations overlap, the "good old days" becomes a two way street (to gargle metaphors). I do find that interpretation very interesting and it fits in with my world view that history ("historia" - Latin for "story") is generally rather more complicated than many would like it to be to fit their current (or current as was) world view.