The book is not arguing against multiculturalism or diversity but rather it is arguing that multiculturalism and diversity are being used as an excuse to stifle free speech and silence dissenting opinions in institutions of higher learning. You are misrepresenting what the book is about.
https://www.amazon.com/Diversity-Myth-David-Sacks/dp/0945999...
The book is not arguing against multiculturalism or diversity but rather it is arguing that multiculturalism and diversity are being used as an excuse to stifle free speech and silence dissenting opinions in institutions of higher learning. You are misrepresenting what the book is about.