Be that as it may, a score of 3.1 (Amazon) and 2.8 (Goodreads) with >100 ratings makes this book an extreme outlier.
replyOn Goodreads, that's -4.4 standard deviations.
On Amazon.com, where reviews cluster around 4-4.6 stars, it's -8.5 SD! (Actually quite amazing, when you think about it. It's easily in the bottom 0.1% of titles.)
Check this out: https://emerginginvestigators.org/articles/25-198/pdf
That it's this extreme would honestly make me suspect that it's just pissed off some group of Very Online(tm) people.
replyI note that virtually all of the 1 stars are from after it was longlisted. Annoyingly, Goodtime does not provide stats on rating over time.