Note that the fragments from mummy cartonnages and book bindings mentioned in the article are known to be fake. See here for some context: https://www.theatlantic.com/magazine/archive/2020/06/museum-...
I went down that rabbit hole a while ago and I found convincing arguments that the Sappho poems were fakes (though the Bible fragments are genuine but stolen). I can’t find the source again. I thought the Atlantic article explained it, but they stop at the Turk who provided them to Obbink. So I’ll settle for “likely forgeries”.