That's very strange for me to hear, considering the position of the author himself and some of the views espoused in the book. Though I shouldn't be saying that books ought to be restricted to certain ideological followers. As a Communist myself I have my own favourites but I doubt they'd be so useful to anyone here.
I'm definitely pro-capitalism personally, but I think a collection of books that offer a convincing argument towards another perspective would be well received in the HN community. You should consider posting some.
I have to agree with this. I have strong opinions about economic and political systems, but I also recognize these are some of the most contentious questions and viewpoints out there.
In light of that, a thoughtful and reasonable look at alternatives is the best way to reduce some of that contention.
For me it's nice to see this is being recommended even outside social anarchist/Communist circles.