I am uncomfortable with the assumption that what went on in one corner of Taree, applies across the field of aircraft manufacturing and maintenance in Aus; seems to harken back to the "could have happened to anyone" attitude that prevailed immediately after the incident, before the ATSB report opened the can of worms so to speak. In not distancing ourselves from what appears to be a systematic failure to adhere to accepted aviation standards, we are in effect telling the rest of the aviation fraternity that we are not capable of administering ourselves. I don't for one minute believe that is the case; yes this accident has revealed shortcomings in the oversight of manufacturers by the governing authority, but provided that RA can show that they are addressing this and quickly too, I see no reason to throw the baby out with the bathwater.
The same goes for the pilot's actions I'm afraid; I've said it before elsewhere, but if the aircraft had missed the ferris wheel, he would still have been flying over a considerable crowd of people at well under 100', having barely cleared the fence and possibly not being able to clear the trees beyond the wheel. I am willing to bet that the assembled throng would have been baying for his blood and phrases like "criminally irresponsible" would have been used to describe his actions. The fact that he actually collided with the wheel does not diminish the severity of his transgressions, if anything it makes it worse, because literally thanks only to intervention of the applicable deity did we avoid multiple fatalities and injuries. We would be facing a very different legal and social landscape if the worst had occurred.