Certainly, if you have evidence of murder or something, please do report it.
But for an idling vehicle?
Note that these laws are only targeting idling while parked, rather than during normal use, such as at a traffic light. This is called "true-idling" or "long-duration" idling.
Has anybody considered how much CO2 or other greenhouse gases are actually released by "true-idling" or "long-duration" idling vehicles, either individually or in aggregate? I spent a few minutes researching it with an LLM and couldn't come up with much. Most of the information and numbers I got were for ALL idling, including during normal driving like at a traffic light. My guess based on that is that it (true idling) is a trivially small amount of CO2 compared to the overall.
But it's plenty to earn yourself a nice payoff at the expense of your hard working delivery driver!