Defeatist, no, realist, YES.
I have a couple of friends and neighbours who hold senior positions within the Police force, serving different constabularies, and we talk regularly.
There simply aren’t enough resources for them to attend murder scenes, violent assaults, aggravated robberies and burglaries and major RTA’s.
I too really wish it wasn’t the case, but I’m afraid a report of a car undertaking in lane one, even if it was known to be stolen, would be closed before you’d even ended the phone call, with the standard conclusion of “No further action”.
Whilst it would be logged by the operator, it wouldn’t even be communicated to the front line !