For me, the key problem here is that these are very peripheral insiders indeed. Here's my company's study of the Enron corpus:

http://blog.lumino.so/2011/11/07/enron-evil-versus-football/

Just look at all that orange at the top of the first image: that's traders talking to each other about trades. Energy trading is what the company was about, not the tiny internet company that they may have spawned or the HR department. Those people don't deserve to have had their reputations ruined by the fraudulent hedge fund blowup and C-suite malfeasance, but that doesn't mean their parochial views are the correct overall view.