To those confused about how Snapchat uses the Facebook API:
At least for iOS, Snapchat (used to?) have a feature where you can "find friends via Facebook." Taking a closer look at the latest version now though, it appears this feature has gone away and the only way to add friends on Snapchat is through your contacts list or directly by username.
I believe the OP is implying that calls to the Facebook API (even those as trivial as fetching friends) gives Facebook valuable data that it can analyze and exploit for their own gain.
At least for iOS, Snapchat (used to?) have a feature where you can "find friends via Facebook." Taking a closer look at the latest version now though, it appears this feature has gone away and the only way to add friends on Snapchat is through your contacts list or directly by username.
I believe the OP is implying that calls to the Facebook API (even those as trivial as fetching friends) gives Facebook valuable data that it can analyze and exploit for their own gain.