Earlier quoted context omitted.
My concern would be around the long-term effects of inhaling vapor from heated metal alloys. I doubt that we have enough safety data, given the newness of the tech and (I assume) the variety of metals being used. That being said, I’m no expert so please chime in if you have information around this concern.
I don't understand exactly what you're afraid of. I often prepare the food I eat in a contraption of "heated metal alloys". We know perfectly well how to make such things safe.
Vape coils are typically kanthal, the same material as in my ceramic kiln wires, and were not designed for food/smoking purpose before people started using them for that.