Original poster.. as a listener of police calls first on monitors then on scanners since I was 11 or 12, that will be 60 years this fall...
Criminals are pretty stupid, that's why they're criminals, police never had an issue with First Responders, Media types, ham radio operators and serious hobbyist purchasing expensive radios that got more and more complicated to program and listening. I don't think that group of listeners has any ill intent, they have good intentions and it wasn't that many people.
I do understand your point and without going into it. Even stupid criminals can download an app.
This has caused a reaction similar to what your Police Department is feeling or should I say a reaction that you are feeling.
It is not illegal to listen to a police scanner if it's in the clear. There are no laws against a company streaming the police on an app on a phone that anybody can listen to. Whether it should be against the law is a horse of a different color and not part of this discussion. If it was outlawed then criminals could just buy the radios.
The contributor to streaming the police is not at fault. The criminals could actually buy the radios and program them, it wouldn't be any different. They would just have to spend the money and program them or find the resources to program them, a scanner vendor perhaps, and then be smart enough to be able to properly use them.
If you or your Police Department have issues with this then they should do what countless other police departments have done and that is encrypt their police broadcast then it can not be streamed or listen to by serious hobbyist, first responders, media types or good citizens that have no ulterior motives and have nothing but good intent.
That's your police departments answer to their concern. You can't just arbitrarily pick one contributor and tell them they can't stream anymore because your Police Department operates in the clear and wonders why the criminals are listening on a cell phone.
As far as police discontinuing encryption because we stream less, that's not going to happen, we're way past that point. Eventually we won't hear any police, similar to other countries.