"Open defecation is not concentrated among the world's poorest people."

Who has read this book? If you have, what is your opinion?

https://ssir.org/book_reviews/entry/a_cultural_view_of_sanitation

https://blogs.lse.ac.uk/southasia/2018/08/08/book-review-where-india-goes-abandoned-toilets-stunted-development-and-the-costs-of-caste-by-diane-coffey-and-dean-spears/