Again, I'm not sure what to say. I agree with many of your criticisms, but it's hard for me to see why they imply that a tool to help police detect and investigate every gunshot noise in my neighborhood is bad. I'd much rather have an undertrained cop investigate than nobody at all, and training cops to a European standard would require large investments in police funding that I'm not sure are politically feasible today.
The problem is the tool is ineffective (to the point several cities have stopped using it). And anything that causes an erroneous/unnecessary police response should be viewed with extreme suspicion, given the massive flaws in our police model.