This. To put it simply, they like Precise data, not Accurate data. They want a bunch of data-points saying one thing and couldn't care less if it's objectively the right target, not a bunch of data points saying a bunch of things, one of which is actually right.
Precision data gives them convictions and convictions give them promotions. As they say, any metric that becomes a target... This is why giving the police invasive surveillance tech is a terrible idea, they will only focus on the data that fits their narrative and discard the rest. The defense doesn't even need to know that any other data exists.