What makes you think a computer run system won't be subject to biases (in particular of the implementors)?
What's the point? The point is that there is a clear, rational audit trail for "why was this decision taken" with a computer system. You can challenge that. You can't challenge an overpaid gov admin whose primary motivating factor in making decisions is pleasing his superiors, no matter how removed.
Very accessible set of case studies where algorithmic management of traditionally human-run bureaucratic processes is biased and destructive.