This was trying to create a matriarchal society with women keeping harems, owning property and businesses and males playing a lesser role. This was due to many more males than females settling the planets in question, and then a mutation that makes some males only able to father other males, thus females are in short supply. Whether that would lead to this society or not is hard to say. The society isn't really much different, more like our society in 2000 than our society in 2022.
In spite of that difference, we still have some of the romance formula strictures getting in the main character's way. The main char is a pretty typical romance heroine, everybody leans on her for help and support, she has no one. She's typically driven, sleepless, frazzled and out of touch with herself. Having a female centric society has not helped there.
This book is not quite a complete story. It ends at a decent breaking point between volumes, more like 'Yoonbarla' than 'Tangle in the Dark' but you won't know how it all turns out in this volume. I don't know if it all wraps up in the last volume.
All in all, a good story worth reading, which is my definition of three stars. Sorry but five stars for me is reserved for books that change the world like '1984,' 'Dune,' etc.
(review of free book)