This book is mostly read by women, and only women have publicly reviewed it as of yet, which is odd for a book subtitled "The Next Generation of Manhood". As a man, it sharply changed my perspective on gender issues, and made me aware of the harmful attitude towards women which men are socialized to feel from a young age.
I learned that the obsession with women's bodies in popular culture is degrading, that women in a relationship are still seen as the property of the man to a significant extent, and that men support and encourage violence against women when they hold sexist beliefs. All new information to me.
Given what a large shift in perspective this was, I now think every man should read a book on toxic masculinity, to learn the right way to think and feel towards women.