Is it really a good idea to have everyone know that?

It really doesn’t hurt.

Do we want "journalists" to drive over their and take pictures of people in crisis (possibly worsening it).

How is a journalist any different than a dozen randos posting it to TikTok? At least the journalist would be more likely to report facts instead of “#justdoit”.

Or let's imagine a car chase, do we really want criminals to know that a spikestrip is set up 2 streets ahead?

his isn’t usually a concern. Spike strips are set up pretty much only when the criminal has no other option. They aren’t done in a residential area where there are many side streets and turns, because it’s like trying to herd cats.

Most of the time in a chase, it’s info the criminal is already going to know. Where they are, what they are doing, etc. the cops don’t normally detail their plans on the radio, just communicate info.

Do we want information like warrant and licence checks to be held over unencrypted radio transmitions. Allowing everyone who wants to to listen in and learn about people's criminal histories?

This info is already public. You can literally just look it up on government sites. You can do that in many different countries, in fact. And I’d say that’s a good thing, actually. Why should we keep criminal activity private? How do we keep both citizens and government accountable if we aren’t open about what was done and the punishment received. Otherwise you can have people just disappear from the street into a jail cell, and the public have no way of ever knowing.