Oh the article hints darkly at "reasons" why the annonymous writer must remain secret, but get this: " “The author feels their identity is almost irrelevant because there is scarcely a sentiment expressed in this book that is not shared by numerous others who have served and continue to serve this administration at its highest levels.” This is rumor mongering, "Orange man bad!" with a side order of "everybody says so!"
The writer notes that a firsthand account of a sitting president written in book form by an anonymous author is "unprecedented," and then hurries on to mention Deep Throat of Watergate fame.
Supposedly not written for money, the writer has not taken an advance and will donate a "substantial portion" of the money to truth efforts (propaganda to take down a sitting president) world wide.