Same as any other ads or analytics sdk (google, branch.io, etc...)
getting data to target ads. Apps gladly integrate them, because they can get better analytics on how the app functions and is used, but also for marketing attribution (comes back to ads.)
I find the outrage at Facebook for this to be a bit obnoxious. Are we equally as outraged at every app that has Google Analytics implemented? It's sending your data to Google, even if you don't have an account!
I'm not sure about you, but yes, I'm def outraged by analytics gathered without user's consent, sometimes complete with fingerprinting, as well.
I tolerate WebRTC blocker, Canvas Blocker, DecentralEyes, FPI, PrivacyBadger, HttpsEverywhere, uMatrix, and NoScript on Firefox and painfully deal with all the broken websites, despite the costs. It is worth it ten times over.
getting data to target ads. Apps gladly integrate them, because they can get better analytics on how the app functions and is used, but also for marketing attribution (comes back to ads.)
I find the outrage at Facebook for this to be a bit obnoxious. Are we equally as outraged at every app that has Google Analytics implemented? It's sending your data to Google, even if you don't have an account!