The deception comes in when the coach knowingly sends three of his players to the wrong end of the floor, in the hope of deceiving the other team's players.
It is no more "deceptive" than a player head faking one way and going another. If you indicate the direction of the ball to start the half, players may stand on the court anywhere they please. Are you going to start coaching and telling players where they must stand?
As to a coach telling you about this before the game starts, just tell him you are not interested in his strategy but are looking forward to seeing a coach actually employ some, for a change.
