I think you'll find no dispute that the Privacy Commissioner is the ultimate interpreter of the enforcement of the act.
As it relates to the techniques utilized for the purposes of anonymization, there are important voices to include, such as those of academics, who are party to some of what has been encouraged in this space, and those of Statistics Canada, Health Canada and the Public Health Agency of Canada. All of these contribute to the view that acceptable best practices can be established and upheld within this remit.