When it comes to enumeration and general population estimates, things get complicated. What we have always thought of as the majority of rights-holders is established based on the mother tongue criterion. You talked about this, and it is in your report. It is relatively simple to check. Statistics Canada is very capable of and adept at checking it. What is more complex are questions we are missing, such as those on the parents' educational background.
On October 3rd, 2017. See this statement in context.