Although I don't see this having a huge immediate impact on Facebook, the distinction is that if Equifax neglagently releases your PII there is little fallout a

Although I don't see this having a huge immediate impact on Facebook, the distinction is that if Equifax neglagently releases your PII there is little fallout as you are not the one providing Equifax with that data and cannot simply stop feeding them data, when Facebook does it their data subjects can choose to stop providing the data by exiting the platform. Facebook needs both the user data, and those same users patronizing their service to maintain the existing revenue stream.