#airgent
I would suspect their reasons vary from fear of persecution to protection of their reputations. If you knew the Cathay history and what happens to those who openly criticize the system, you would also know why the Fragrent Harbour is the unique way that it is. It will also provide an answer to your original question. Develop a personal relationship with any senior pilot in Cathay, and over a beer he'll tell you exactly where all this "anger" is coming from. Nobody came unscathed away from 2001.
As for leaving, most of us have been here too long, invested too many years of our lives, to start again somewhere else. We all carry hope for the day when mutual trust and respect can be reestablished, but sadly we carry that hope too long until it is too late for most of us. Don't forget that all of us one day aspired to join Cathay, we wanted to be here more than anything else. Now you tell me how a person, or an entire pilot body, goes from that to this?
Your comment "so sad a handful of parasites can ruin such a great site," shows that you either have no experience of the flight line here or you're seen as untrustworthy by the majority of your collegues who naturally don't confide in you.