There is ample evidence that CA had no impact. They were charlatans trying to sell snake oil; IIRC the underlying algorithm was based on a simple factorization of a User x Likes matrix that did not have substantial predictive value.
There is plenty to lay at the feet of Meta, but I've always thought the CA scandal was an overreaction.
There is plenty to lay at the feet of Meta, but I've always thought the CA scandal was an overreaction.