In short, Mr. Saunders argues Canada before 1967 - yucky.  Post 1967 - perfects.  Given the shibboleths he attests in all his articles, I find his conclusions doubtful.  Certainly, it's fine certain things changed (i.e. racism, and Canadians were undergoing a sea-change in many attitudes in the fifties, I may point out) - but Canada wasn't a wasteland before.

He also exaggerates to make his points.  Race/country of origin restrictions on immigration were dropped in 1962, by Diefenbaker (whom he paints as a primeval boogeyman) and Ellen Fairclough, the Immigration Minister (first woman to be a cabinet minister).

On divorce he's on stronger grounds, Parliament never passed a Divorce Act, leaving divorce to be different by province according to whatever English law was at the time it was "received" in the area.  In Quebec and Newfoundland, divorce literally required an Act of Parliament.  Trudeau the Elder, IMHO, wisely, in effect, adapted the Nova Scotia divorce laws countrywide.