Terry Pratchett's books satirized both the "I don't trust the government but do trust the random dude in the bar" and the "they couldn't write it down if it wasn't true" trope for decades. He wasn't the first, I'm sure, just the one that most immediately comes to mind.

Neither of these is new. The scale and velocity is different, in a meaningful way, but "the internet" hasn't changed fundamental human behaviors there.