I came to the same conclusion after reading his book. His book is pretty terrible.

His viewpoint (while interesting) was not very grounded at all. Simply because agriculture requires more work doesn't mean it's inferior to hunting. Try hunting an antelope if you've got a sprained ankle.

Another perspective that irked me was his blind faith that modern society is built purely conceptual ideas. Citing empires, car brands, and money. In reality all these things work because they provide practical benefits. Few people or groups go out of their way to work purely on ideological bases, and those who do, do so on a rational philosophy. Let alone as soon as it becomes impracticable (See Maslow's hierarchy of needs).