Therefore, using your logic, Tutankhenamen is a fraud because he was forgotten for over 3200 years.
Do you really realize how few documents we have from the first millennia? Books were published in the dozens, or hundreds... not thousands. And many if not most were lost. We only have some of the apocryphal religious texts today because they were preserved in out of the way locales and survived the destructions of various book burnings. Do you know how many of the Aztec Codex survived to today... and were only talking 500 years there. Even Vatican records only go back to around the seventh century with any completeness.
There are abundant records from the Christian era, and even with documents that haven’t survived like the writings of Papias there are references to its existence and quotations from it. Nobody mentioned the Shroud of Turin. They mentioned the Edessa shroud, of a face, they mentioned apocryphal legends like Jesus’s letter to Agbar, but nothing at all about the Shroud even though there was intense curiosity about Jesus and the early Church.