This report would seem more damning if the authors had at least attempted to keep their bias out of it. I found it significantly less credible because of it. I kept wondering what info they weren't sharing in their rush to paint Airbnb as liars and cheats. Or if their own data, which has no external validation either, is true.

Someone also made a good point here regarding Airbnb's motives. It is entirely feasible that Airbnb did a cleanup of bad/illegal listings before submitting data for government scrutiny.