"... if my review seems a little harsh, it's only because I wanted children."
Reviews have been faked, coerced, traded for, paid for, etc. since humans could scribble with a charred stick. Authors are getting in on the action and aren't very good at faking it.
I've never understood why anyone gives the time of day to all those author endorsements on book covers recommending someone else's book. I give those less credence than the review from the Podunk Gazette.