I have my complaints about this, but "blue areas" over the last several decades have meant "all major metros", and some forms of crime are just endemic to density, and in some sense all crime simply tracks population.
But we don't have to agree on that; people everywhere care about crime, and the promises ALPR vendors make, while arguable, are not ludicrous.
In my area, for example, there are counties where if a thief can escape there, they will not be prosecuted. So I support Flock since it gives a higher chance of interception in my county, which will prosecute them.
What we found is that the cameras mostly had us enforcing failure-to-appear warrants for neighboring municipalities, which was not an in-kind contribution we wanted to make to those munis, and so we didn't get much value from the cameras, which is a big part of why we shut them off.