It doesn't matter if it is more effective, but it is cheaper than employing people connecting dots.

Also the generation currently in politics would feel left behind if they didn't employ such pattern matching systems, even if there is no evidence of crime reduction.

It is part of the quantification of everything. You don't just get a number, you get several thousands and the judgement on you is calculated on the fly.

I think people responsible here are still the ones that decided to buy it. They are responsible the market exists. Also not a mystery since those people are mostly evaluated by how many people they put behind bars.