I think you are leaving the human out of the loop. When a friend of mine recommends me something I'll lower my skepticism because I'm assuming my friend would not send me garbage.

If a random podcaster says "I've proved that P=NP" I'd say "no you didn't", but if a math professor sends me that same link I'll keep listening to see where this goes. And I've definitely read texts making wild assertions that only at the end were revealed as hit pieces and/or propaganda.