Amazon reviews aren’t worth a button, without knowing how many have sold
Are these reviewers’ friends of the writer who give five stars, and the ones who give one star failed writers that sell nothing and try to derail others, or a just readers who like to insult knowing they get no comeback?
To me a review would have more value for a reader if Amazon indicated total sales of the book? That way if it sells maybe five books and three reviews all trash it, you get a far better balance. But if it sells five hundred books with three reviews trashing it, that is a different matter.