I stand by the principle, even if my wording was incorrect. Once the ball is set, it's at the offenses' discretion as to what they do. If they are hovering over the ball within 3 seconds of the end of the last play then it's their prerogative. No rule exploitation. If the refs are hurrying beyond some normal expectation then that is on the refs, not the offense. I would think, however, that the refs are supposed to have the ball set for play as closely to the start of the play clock as possible.
This is a goal but is not the only thing involved in the concept of "ready for play".