I'm so baffled by Mr. Zuckerberg's response here: the core complaint is that research was sidelined and deemphasized, not that it didn't happen at all.

We can both be satisfied Facebook is seriously researching its impact on society, and also appalled that it has been too slow to act on the results of serious internal research. Our complaints with Facebook are complex; Mr. Zuckerberg is giving such a naive response.