I do not know if Statistics Canada has been doing things wrong. All I can say is that there was clear pressure in 2006 for Statistics Canada to conduct a study of the vitality of official language minority communities, and thus to enumerate rights holders. Statistics Canada cannot decide to conduct studies on all subjects, even if it is an extremely important subject. There has to be the will to do it.
On March 21st, 2018. See this statement in context.