What is the big deal?

Only 30% of Canadians are still religious.

http://www.people-press.org/2002/12/19/among-wealthy-nations/

Stats Canada always gets the numbers wrong:

1. people tend give socially conventional answers about religions, saying they regularly attend church and give tithes, when as often as not they are lying

2. Stats Canada records the response along with the name, address, birth date and other personally identifying information, for future publication. People with kinfolk in Cults that practice shunning are not going to give an honest answer. Neither is a non-religious teacher at a Catholic school. 

Even back in the 1980s being Anglican, Baptist, Catholic, ..., Jewish had no significance for most Canadians beyond what genre of ritual was performed when they were born, married and buried. Bibby (Fragmented Gods)

Bibby noted that it was a bit like declaring yourself to be English, Irish or Scottish. A statement about your ancestors, not about yourself.