I would say that in this specific case the leak actually puts a very positive spin on the quality of the ATC / airport crew response.
it is likely that if a sanitised version had already been published to show how well the situation was dealt with by ATC, the leak of this particular document would not have occurred.
As Roffa has tried to point out once you move away from a principle of not publishing anything and decide to publish positive things it is only a small step to the point where you have to publish everything and we'll quickly reach that point. Once that happens you'll find that when the outcome is not so positive the clip will be live on 24 hour news with the usual group of self appointed aviation experts passing their unqualified judgement on why somebody screwed up. Do you really want that ?