Grenville,
I think responsibility for identifying a qualifying sources for the media, actually rests with the media. For example, I do in part agree with you, however as the "Spokesperson" in an incident such as today, you as a responsible aviation professional would decline to comment until facts are established.. Like the AAIB do. That would not satisfy media demand for immediate sensational news, and comment to fill broadcasts, so muppets like Ferguson will always get airtime.
Catch 22 sadly.