What's the problem with false positives in this case?

I'm pretty sure, "don't bother with this technology which reports shots to the cops, because it has false positives" is a very weak argument.

Here is one instance

https://en.m.wikipedia.org/wiki/Murder_of_Seth_Rich

We talked to the cops (not in this instance but in another homicide)

Yeah, you’re thinking of Boomerang. ShotSpotter did some limited body-worn stuff for the military back in the day, but the vehicle mounted stuff is all Boomerang. Entirely different approaches (distributed microphones vs. a single microphone array at the expected target) done by different companies.