Disappointing... That book has been highly recommended ad infinitum on HN, to the point that it was sounding like gospel. Maybe that should've been a hint, heh.
This may constitute a response, but it’s not clear if the original author wrote it in response to Guzey’s claims, or if it was the author or just an imitator. The writing style strongly suggests it’s the author, and it uses the author’s twitter handle and website name as the subdomain: https://sleepdiplomat.wordpress.com/2019/12/19/why-we-sleep-...
https://statmodeling.stat.columbia.edu/2019/12/27/why-we-sle...
Now that looks quite bad.