Given that the survey was extremely poorly designed and the nature of the survey, and how it was conducted, all but guaranteed the response rate would lead to massive sampling bias, I can't imagine what meaningful data anyone could obtain from this.

The only thing we can say for certain is that 70% (or whatever) of survey respondents is all but guaranteed to NOT be remotely representative of the opinions of 70% of Canadians.  If the opinion of Canadians matched the survey it would purely be by coincidence.