The linked article already notes that model accuracy degraded after their reweighting, ultimately contributing to their abandonment of the project. (For completeness, they could also have considered nationality in the opposite direction, improving accuracy vs. nominally blind baseline at the cost of yet more disparate false positives; but that's so politically unacceptable that it's not even mentioned.)

My point is that even if we're willing to trade accuracy for "fairness", it's not possible for any classifier to satisfy both those definitions of fairness. By returning to human judgment they've obfuscated that problem but not solved it.