We wish for e-cigarettes to be brought under the same regulatory framework, and/or for some specific regulation to be put into place, whether they do contain nicotine or not. Even if this device is said to contain no nicotine, the fact that it looks and acts like a cigarette, is puffed on in the same way, and is inhaled means that it should also be regulated.
I don't know exactly what's in this one, but I certainly know that even if it has glycerol or glycerine or whatever other product we sometimes consume in fast food, a lung is not a stomach. Alveoli in our lungs are certainly made to breathe air and air only, so probably this is not completely risk-free either and should be brought under the same regulatory framework.