Wow that book is something. A bucket of cold water into the face, but in a bracing and energizing way. Was absolutely hypnotised by the writing and protagonist. It is not fun, but it asks some really interesting questions.
This is more litfic than genre SF, and some of the worldbuilding feels fudged. But that is not the point of the book. Also the ending leaves you dangling. Intentionally and I loved it, but I know some ppl hate that.