IIRC, it was the show that came on(often joined in progress) after the Toronto Maple Leafs mid week game on CFTO. That's the only reason I know it.
Per wikipedia,
The Pig and Whistle aired on CTV from 1967-77, and had more than one million viewers in the early 1970's. I think it was on at 7:00 or 7:30 PM.
Keep in mind that in the early 1970's, most Canadians had their choice of watching CTV, CBC, or an American station with a snowy picture, (if the weather was good). We had a few other French stations in Montreal.
Nobody had cable TV, only a few people had a rooftop antenna, and the kids had probably broken off the 'rabbit ears' on top of the set, so they had to be jammed into the small portion still attached to the TV.
I really doubt that many people born during or after World War II watched
The Pig and Whistle, but a lot of them weren't the ones who chose the show after the news. It's probably a show which had 0% 'diversity'.
I always thought that
The Flintstones in French would have been funnier if the scenes where Fred was being chewed out by his boss Mr Slate had kept the English dialogue.