Well, you can also go for the "steady drip hollows stone" approach, which is something that started to erode trust in the MSM here years ago, or, to be more precise: The MSM have managed, through years and years of sloppy, careless "reporting" to erode trust in themselves. And while you obviously never heard any talk of it in the MSM, people talked and talk in private about the rotten state of the media. And some time ago, "suddenly", the MSM deigned to notice the mistrust. Predictably, they blamed it all on "the political right" and "toxic net culture". Right. Ah, anyhow: You can always just talk about it when you notice inaccuracies or agenda pushing. No need to go all missionary, either. A simple taking notice that others register is often more than enough.