Well, for one, I kinda believe the guy. And then this 'joke' comes along - well, it is defined as a 'joke' after the fact - it certainly was not apparent at first glance - quite the opposite.
As to DD - it is a never ending process and quite inadequate unless one has inside info. I keep looking for that, rarely finding any. One pulls the trigger based on many factors - I like to rely on the opinions of those I trust - and when that trust is violated I object. Don't you?