I think a lot of the discontent is that (reportedly, I have not read it) he seems to present the material as 1. largely his original work, and 2. revolutionary,

I think a lot of the discontent is that (reportedly, I have not read it) he seems to present the material as 1. largely his original work, and 2. revolutionary, while the ideas may be interesting and well presented, neither of those things are actually true.