Yeah, I find this view to be pretty unfair to the author. He was not directly responsible for things like data policy or anything at Fb. As he said multiple times, he found fulfillment from working on projects with a small group, and from distancing himself from the higher corporate debacles.
I don't think he is morally at any fault.
Here's another way of looking at it: Fb is so damn big, there's no reason them looking bad to the public should condemn every software developer on their payroll.