Regular readers will recognise this question from SRBP last week. McCullough also noted that Canadian conventional media are looking for familiar narratives in which to frame the story. That basically fits with the stimulus for last week's post, namely Neil McDonald's trite opinion column on the shooting that framed the story in the context of Donald Trump's islamophobia.
McCullough says that Quebec is a sensitive topic in Canadian politics and media:
In a 2006 essay, Globe and Mail columnist Jan Wong posited a theory that Quebec’s various lone nuts, many of whom were not of pure French-Canadian stock, were predictably alienated from a province that places such a high premium on cultural conformity. She was denounced by a unanimous vote in the Canadian Parliament and sank into a career-ruining depression. The current events magazine Maclean’s ran a cover story in 2010 arguing that Quebec, where old-fashioned mafia collusion between government contractors, unions and politicians is still common, was easily “the most corrupt province in Canada.” That, too, was denounced by a unanimous vote of Parliament.