I appreciate the pragmatic stance you take, and we should definitely move to more robust identification methods.
But making this case for better ID tech should IMHO not be confused with giving facebook and the others a pass. This should never have happened, and the very fact that we have a data trove this big is already a problem. That they don't seem to even attempt to protect that data is another one.
Close that shop up. The fines for this kind of stuff (and the other stunts they've pulled) should make it economically no longer viable to keep it open, really. The first time you fuck up this hard, the fines should hurt. This is not their first time.