It is fatal for any body of workers to have forever hanging from the fringes of its skirts other bodies on a level just below its own; for that means continual pressure downward, additional difficulty to be overcome in the struggle to maintain reasonable rates of wages.
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.

