Well as one of my Pagan friends put it on their signature tag
"Wicca pretending to be a religion since 1957" and sense the passage was written before 1957 I find it hard to believe it would apply to them.
But
I always thought and mind you I have no scripture to back this up, but a person who can physically conger something up from nothing as in making something physical to hold like an apple and not by hidding it up their sleeve. For someone to do this they would have to have the help of either God or a Demon who wanted people to belive in other Gods. If that makes sense.
Because I could see that back then, someone who could make something appear and say it is from this new god they want to tell you about and preform miracles.