It seemed to gloss over major historical factors in a way that presented them as accepted wisdom. This often hides implicit assumptions about those historical factors that reinforce modern systems.
I just didn't find Sapiens to be that interesting once it got out of discussions about pre-history. The rest of it's views on human development seem to really be focused on explaining the "rightness" of how we currently already see the world. I'm probably not explaining myself well here.
The overwhelming praise for Harari also makes me suspect. The people praising Sapiens are people that I don't trust. So...yeah, that's me being a weirdo.