The political views impacted were indirectly affected by the aforementioned online communities. Whatever the design of the groups, the resultant effects have been overwhelmingly political.
I don't know much about Ms. McKew as a writer other than she was present during the Russia-Georgia problems and would have been witness first-hand to Russia's prototyping of these kinds of tactics, as well as she's written for other reputable outlets like the Washington Post and was interviewed for Harvard Political Review[0][1]. Couple that with not only our intelligence agencies, or even the five eyes, but other national agencies like the AIVD (Netherlands) have all confirmed that this is happening. They aren't exactly green. And while I would be remiss to just dismiss a university study, I don't know who the researchers were, their methods, or their scope. If it's only about the fake news items, that stuff was almost passé by the time these other tactics really took hold.
If you take a look at the CBC article and the timing of the attacks (for lack of a better word), they aligned quite tidily with a continuing stream of anti-immigrant conversations online to the point where those vitriolic approaches to the subject of immigration were wrapped up in the yellow-vest marches here.
[0] http://harvardpolitics.com/interviews/molly-mckew/
[1] She's also a particularly prominant subject of attack for various [outspokenly] right-wing outlets and pro-Russian sources. It doesn't take much of a search to find that.