Nothing probably happened to "all the other authors", they most likely just haven't existed in that sub-genre yet very much. It would take a long time for enou

Nothing probably happened to "all the other authors", they most likely just haven't existed in that sub-genre yet very much. It would take a long time for enough people to become interested in writing books for certain fields for author demographics to really approach anything nearing a reflection of the global population, so I don't expect every genre of book to be equally diverse in its authors. "Suspicious" is also a really strong biased word. I could just as well claim that I'm 'suspicious' as to why most parenting books are written by white women. But as I mentioned before, I do not care about the author (unless their biases shine through in their writing too much). And it's completely reasonable to expect that mothers would be more likely to write about their experiences parenting than fathers at this point in time, and that only in developed 'white' countries would parents have the free time and luxury to write books about their experiences raising children. Similarly, if I read science books, I would expect (and want) authors of those books to come from places that have well developed science programs (like the US, which is predominantly white). If the author isn't in the majority of that sub-population, then good for them! But ultimately that does not dictate what I read. Neither the readers nor the authors should be blamed for the statistical outcomes of the environment. If you want more non-white authors, petition for the US to adopt a better immigration policy that would be welcome to experienced creative individuals from poorer countries; calling racism at readers/authors isn't going to solve anything.