I could definitely see that happening somewhere where presrcibing marijuana medically is a thing. Edibles aren’t for everyone, and the doctor doesn’t want their patients to inhale smoke. So, they might go the vape route. I imagine it to be similar to how some people have to drink their medicine because they can’t swallow pills. That might also just be the preferred method. Not everyone likes the smell of burning weed, for example. It could also be the flavour, the feeling when inhaling, or something else entirely.