Faking your own illness is very different to faking an ambulance with lights and sirens racing through town.

I'm pretty sure they meant faking being a ambulance or a firefighter or a cop to rob someone.

Ah sorry, misinterpretation on my end. You are probably right.

But: fake cops robbing people is pretty common too. Unfortunately.

Even more unfortunate, real cops doing it also happens.

Yeah and I bet that it would become even more common if cars fell for it every time. A predictable victim that always for for the same trick in the same way is much more attractive than a human that may respond in many different ways, that reads the news and may become more cautious if there is a crime wave.