Seems like Facebook made some more mistakes with your data. And reading through this you are reminded again that Google has had its problems.
When you decide to trust someone with your information that’s what you do – you trust them (to take care of the data and use it only as you agreed with them). And that includes trusting them to be competent to mind the data and to limit their interactions with other parties to parties that do not risk compromising your trust.
Some the previous issues with Facebook have related to the complexity of administering your own security within Facebook. This seems like a very different issue.
I continue, for now, to be a facebook user.