No wonder crime is on the rise! With that attitude nothing would get done!
Your point about abandoned cars is irrelevant. The cars I see are being driven by people who can be (& are) easily traced.
I suggest you report an untaxed car to the police & then post back on their attitude. You will be surprised. Of course, if you are prepared to be intimidated, well, it won’t happen, will it?
I have reported cars to the police in Malaga & Alicante as well as the Uk & I will continue.
If any-one wants to object, well, good luck to them. they haven’t tried yet!
I’ve lost close friends to uninsured drivers & it is as serious a crime as the other offences you mention.