It's still completely irrelevant to the discussion. Potential immigrants send in paperwork and get approved by a harried clerk, and never have to interview an immigration officer. An interview with border services as they enter is beside the point. Border Services isn't checking into what their views or politics are. And Canadians want such things checked and validated. Canadians want to screen potential immigrants before they're accepted.
Perhaps if you did a little reading on it you'd find out you are wrong on the interview comment. At least the Canadian government says you are.