Perhaps some good will come out of all this. Maybe in the future, when some PHB asks development to add a questionable data gathering function to a platform they can say, "Remember Facebook?"
Apple runs a messaging service called iMessage. It logs all of your call metadata, SMS history, etc. There is no opt-in, it's just default behavior. Apple also runs iCloud. All of your data is sent there, too, including complete conversations.
Can someone for the life of me explain to me what makes Facebook the villain here? Apple does exactly the same thing.
Facebook has never sold this data. There is no evidence they've even used the data for anything except its explicitly-stated purpose.