An Anti-Stratfordian Tour de Farce
Although an intensely irritating waste of paper, despite appearances, there is a purpose in this type of publication.
Books like these are published to be reviewed here. To be cited in internet discussion. When they find themselves unable to explain why The Tempest is associated with Hallowmas rather than Shrovetide, these books provide Oxfordians with an out. "Have you read my book on The Tempest" they will say. Or "Have you read Stritmatter and Kositsky's book on The Tempest?" It's usually said with a patronising snort, implying both that the matter has been dealt with definitively and whoever they are arguing with is poorly read on the subject.
In other words, the book is intended to be cited for what it set out to achieve, rather than what it actually says.
It actually says very little.