It's outdated in many ways. It's very man-oriented and directs its message to men. The focus is on the proletariat and production, completely ignoring the fact that most work is actually care & maintenance. It's also very absolutist and utopian about communism. By that I mean that Berkman describes the process of communization as binary switch, arguing that no middle ground is possible after the revolution. The experience of Rojava gives us the hindsight that it is in fact possible and even necessary, as with any radical change, to introduce it gradually. Overall, I'd recommend this book for someone who's already acquainted with anarchism and wants to learn the history of anarchist thought.