I think the protections and confidentiality in the Australian legislation are very often aimed at the integrity of the process, both the integrity of the investigation and the protection process. They're not intended to limit what should be disclosed publicly as a result of an investigation where there's a public interest in that. Also, it comes back to the oversight agencies having both the power and the responsibility in the role of publishing investigation outcomes in due course.
On April 3rd, 2017. See this statement in context.