I don't know concretely if it's due to superstition, but any time a new rule is implemented into the NBA or a new piece of equipment or a new technology, there is always a transition and adjustment period by players and coaches and anyone involved with the game.
“Yes, there was a sort of underground cult following, which came from nowhere, and grew, and grew. It was quite surprising to us all, because all of us had spent probably the previous five to ten years without it. So it was quite overwhelming. Overwhelming and humbling.”