Thats now how history works at all man. Pretty much all writing on history goes into the metaphorical dust bin maybe 20-40 years after it is created but the "dust bin" isn't a dead place that no one should ever explore, its the world of historiography, and understanding how people understood their point in time at different points in time. No one should read a history book like its the bible handed down from on high, they should read it knowing the authors biases, the contemporary views on the authors work from other experts in the field, and an understanding of their own knowledge level and context. The reality is that a huge amount of K-12 American history education is propaganda and for someone with a K-12 American history background this book is a very compelling read that provides a useful counter narrative to what they have been taught, the main function of which is not to blindly trust the words in the book, but to understand the practice of history not as a recitation of facts but an analysis of past events with a specific point of view, and how different points of view from authors with different motivations can give different views of the past. IMO, this really brought the field of history to life for me.