The ATSB report does diverge from the accident investigation into a more general investigation into the company and CASAs handling of the company, which is where the Coroner has picked points on about what it has to do with the accident in question.
Its called Organisational factors. The ATSB and others have been looking at such things for a very long time. The Chieftain accident at Young was one of the first accidents that looked beyond the immediate impact of plane against planet. I don't expect a coroner to include that but they shouldn't be criticizing the ATSB for doing so. LB can clarify the role of the Coroner as to whether they look at the "nature" of the death or the cause of death. IMHO a significant difference in meaning.