set up != write software
From the little I played with Arduino’s IoT platform, I honestly believe that if there is a compatible sensor that can detect vape smoke, almost anyone could get a simple version up and running. It was a very simple and largely automated setup if all you want is to get the sensor output to the portal and then link it to a UI element.
Of course gluing together this software is more complex than that, but it’s no grand feat either.
Going by the phrasing I’d say educated guess. I for one agree, it sounds like a massive liability when you have e.g. data protection laws to think about