I draw your attention to
this thread . This is a classic example of hearing somthing and hitting the "major drama button". I once read a story that made the Daily Mail regarding a go-around that somebody heard over a scanner and told the press.........I was the controller involved and it was nothing like what actually happened, but it made some sensational reading.
I don't think it's a matter of trying to keep secret what we do, it just that it can very easily be mis-interpreted and used for all manner of things (damn press), and unfortunately as controllers, we're not in a position to defend/tell our side.