My guess is this might help prevent long term tracking-updating? He does mention this: > we immediately banned Kogan's app from our platform. So my guess is t

My guess is this might help prevent long term tracking-updating? He does mention this: > we immediately banned Kogan's app from our platform. So my guess is the app still existed, and could probably keep querying data to keep user profiles updated. What you like, do, who you interact with; it all changes with time, so the data's value is slowly lost as it diverges from reality. Moreover, there might be apps I gave access to back in the day when I didn't know better that could potentially still access my information. Even if the actors aren't malicious now, this could probably to prevent Chrome-extension like situations. Apparently legit extensions have been bought in the past by malicious actors with the purpose of exploiting their broad install-base and permissions [1]. I could see something similar happening with Facebook apps. [1]: https://arstechnica.com/information-technology/2014/01/malware-vendors-buy-chrome-extensions-to-send-adware-filled-updates/ https://arstechnica.com/information-technology/2014/01/malwa...