People view of EJ is colouring they way they view this.
If you are a fan, he's keeping the players on their toes with new opinions & ideas constantly coming in and challenging the players.
If you are not a fan, then its a sign that he's driving coaches away & can't keep a stable team in place.
As no one on this thread are either a coach or player who's worked under him, its hard to say which is correct.
I am sure he will have no shortage of coaches willing to come and work under him, given he must be the most experienced coach in world rugby at the moment?