Of course there are still "trusted" mainstream sources, expect they can inadvertently (or for other reasons) misstate facts as well. I believe it will get harder and harder to reason about what's real.
You get it wrong. Real-world content will become indistinguishable from "AI" content because that's what people will consider normal.
This is "innocent" if you accept that the author's goal is simplify to maximize engagement and YouTube is helping them do that. It's not if you assume the author wants users to see exactly what they authored.