The First Folio of 1623 is claimed by academics be a confirmation or proof of the traditional theory that the author was the man from Stratford.
In response, John Shahan, founder of the Shakespeare Authorship Coalition, has written a masterful essay in which he nails all the key points for why the Folio screams authorship doubt.
Read it here: https://doubtaboutwill.org/pdfs/first_folio_essay.pdf
If you have not yet signed The Declaration of Reasonable Doubt, please consider clicking on the link and doing so. John is especially proud of the fact that the total signers of the DRD have recently exceeded 5,200 (including 800 credentialed academics).