I find myself still thinking of this book, weeks after finishing it.
Yes, it's reductive (but knowingly so)... but it's dealing with giant sweeps of history, so it rounds off a few details to make what I think are some very valid points.
I like the way the author thinks, and his internationalist perspective. I like the introduction of implicitly libertarian themes, without the seemingly joined-at-the-hip right-wing views on race, poverty, immigration, etc. Hintjens seems to be both a realist in his analysis, and a hopeful humanist in his desire to see more equality, democracy, and self-determination for the people of the world.
A cynic might say that his techno-libertarianism is naive; and perhaps it's true; the future will know. But again, it's there to make some points, and I think that they were worth making.
The metaphors at play: the para-state, the city-builders, etc... all are simplistic, but very useful constructs. Remember, all models are false, but some are useful. I found Hintjens' models very useful.