It is man against machine. If we fully understand how genes work, would you trust some private company to create a trustworthy social credit score based on any potential situation, even situations that are obviously not in the data set?
The story was about people blindly trusting a machine to say "valid". The police force didn't want to figure out the crime, they just wanted to find the one without the "valid". The setting that was presented was some sort of communist utopia where the economic calculation problem has been solved through a gene scanner and central computer control.