Why is she not a reliable source? https://en.wikipedia.org/wiki/Mary_Beard_(classicist) https://en.wikipedia.org/wiki/Mary_Beard_(classicist) "Dame Winifred M

Why is she not a reliable source? https://en.wikipedia.org/wiki/Mary_Beard_(classicist) https://en.wikipedia.org/wiki/Mary_Beard_(classicist) "Dame Winifred Mary Beard, DBE, FSA, FBA, FRSL (born 1 January 1955)[1] is an English classicist specialising in Ancient Rome. She is a trustee of the British Museum and formerly held a personal professorship of classics at the University of Cambridge.[2] She is a fellow of Newnham College, Cambridge, and Royal Academy of Arts Professor of Ancient Literature."