My view is that its a team effort - the players in SR and M10 and equivalent are pinged week in week out and as such don't dive over the ball and hang on as if its second nature. And its drilled in "release, roll, get to feet onside"
If the ref is faced with players doing that - then its likely the game will play out how the players react, more often than not.
But it does vary ref to ref and also their reaction to how the players "play" at the breakdown.