And no, I have never run OOA. There is simply no excuse for it, other than amateurish inexperience.
Accident analysis requires divers to emotionally expose themselves. It's important to limit the criticism to the situation and to avoid making it personal. Sniping at the participants only reduces the likelihood that the next guy will be willing to undergo the process - and then we all lose.
Besides, I think you're wrong. In nearly 40 years of diving, I've had first-hand exposures to four OOA/LOA experiences, though only once as the OOA diver. I've found three factors tend to get divers in trouble: inexperience, arrogance and equipment issues. I've also found that only inexperience can be assuredly resolved...
Brief summaries:
#1: J-valve screw-up back in the days before pressure gauges - the old-timers understand the problem even if it never happened to them. Fair to attribute the problem to my inexperience as much as primitive equipment.
#2: HP hose failed inside the swage and blew out. Everybody was experienced and a pre-dive safety check and bubble check showed no sign of an incipient problem.
#3: Free-flowing first stage. The water temp was over 50F so it would be hard to predict that an environmentally sealed diaphragm regulator would fail.
#4: A complex situation involving a lost deco bottle
and an uncontrolled ascent. A sequence of great big stinking brain farts on the part of a highly experienced diver.
If we live, we learn. That pretty much sums up the path from inexperienced amateur to arrogant professional.