This looks AI Slop. At first the style of the site and the cover of the book were a bit suspicious, but then digging a bit further: - Domain was registered in February this year: https://www.whois.com/whois/vivianvoss.net - Web archive has only a couple snapshots before this year, and it seemed to belong to an "Elite Escort": https://web.archive.org/web/20160515000000*/https://vivianvo... - All his other domains are…
LinkedIn profile picture is oddly smooth and has the OpenAI signature yellow hue, although it could just be an odd touch-up. https://www.linkedin.com/in/vvoss/
aside from the complete lack of background like he's Jobriath except without talent, it isn't hard to find festering boils like the UN link (https://www.un.org/en/observances/book-and-copyright-day) being a sham coming from Russia