Nice performance -- I appreciated Osc's doing lines not just in octaves but including some tenths split between two hands. I don't know what the site's deal is, but I had to do the same kind of trick (I can't remember exactly what) to get the wmv file, but it was interesting.
He says he was born in Montréal, but his French sounds like a second language -- I bet he could have had a rudimentary conversation in French, but he's not a French speaker. Not knowing his biography, I'd guess he grew up speaking English, or else if he spoke French as a small child, he had some brain trauma that affected some speech pathways in his brain. His accent is unmistakably Anglo.
Ad Glenn Gould, I'm sure he took French in high school like everybody else, but I'd be very surprised if his education or abilities beyond standard high school curriculum were in anything but music.
That's not a knock in any way -- technical specialists like scientists or musicians aren't generally known to be polymaths, or even especially cultivated (these days), so that when exceptions occur, they're somewhat noteworthy.
No, Canada and the US are predominantly protestant and Anglophile, so, while Peterson's stated place of birth surprises me, it seems obvious that neither would be especially habituated to French or Franco-Canadian culture.