This is not tangential, in my eyes. These thoughts of yours are exactly in keeping the broader topic initiated by the testimony given in the video. How the CBC reported on the coronavirus was part of but not completely the main issue. That issue, as you so succinctly put it, is we are being lied to.
I'm 35 so I feel you on your perceptions of society as a whole. The added layer for me was growing up in the good ol' Bible Belt of the USA with a preacher for a father. I learned at an early age that even intelligent people willfully disregard facts and information that don't agree with their worldview or beliefs. I struggled with that and took comfort in studying science and philosophy before then receiving an education in writing and journalism. Making a long story short, as a young adult studying Mass Communications at University I learned that the system itself was being rigged. What was worse, it was being rigged in the exact same way I was accustomed to seeing in the churches and schools I grew up in. That rigging is being done through the lens of Denialism.
Webster Definition: "In the psychology of human behavior, denialism is a person's choice to deny reality as a way to avoid a psychologically uncomfortable truth."
This, in a nutshell, is why the top replies to the video are attacks at Mr. Palmer's character and deflections to other issues. People do not wish to believe they are being lied to so they reject the concept outright. It's bad enough that this is common mentality among the populace but the fact that the news media are all involved in this mindset as well is troubling. Scary, as you put it.
Normally, a discussion on a news topic should be conducted from a place of learning. Either learning more about something you didn't or participating in the edification of others using what you have already learned. With denialism being the new way of handling everything the aspect of learning is set aside. Watching the news is no longer about edification but about confirming what you already know to be true.
That mindset is built-in to how we receive the news, even as we scroll articles looking at only headlines. Headlines used to say things like, "Vital Dam in Ukraine Destroyed in the Ongoing Conflict". Now, they read like this: "Mysterious Explosion at a Dam in Ukraine" or "Who blew up the Dam in Ukraine?". These imply or outright claim mystery and create a discussion around who could have possibly done the act. Doubt is sowed and room for denial firmly entrenched right from the start.
And we, as a whole, like it that way it seems. THAT is the part that frightens me and leads me to agree with your house of cards analogy. Our society cannot continue indefinitely if we build it on a foundation of denial instead of factual debate. Yet more and more of the people I interact with in real life and online seem to be willfully embracing lies and half-truths while denying the facts. The number of people who believe in a flat earth is on the rise, moon landing deniers are in full throat, and more and more people are unwilling to open their minds to anything but what feels right to them in the moment.
My final thought on this is not just my frustration with denialism overall but also with the ridicule that accompanies it. It's been popularized now to make fun of or attack anyone who presents a fact based argument that challenges a popular narrative. Even worse, those popular narratives vary in archaic, tribal fashion. Say the two words Climate Change where I grew up and you are in for a world of hurt, intellectually. Say that somewhere else and you are fine but don't bring up any facts about the ISS being a real thing in space.
Sigh. We are definitely not as "Free" as people think. Especially if you have ideas based on concepts that go against the current narrative.