I would agree if I hadn't had such a vast array of experience trying to counter misinformation in my online interactions with others already. I blame the bullshit asymmetry principle, aka Brandolini's Law.

https://en.wikipedia.org/wiki/Brandolini%27s_law

Edit: This could be as simple as something that someone heard once and genuinely believes, passing on old wives' tales. Trying to combat a dedicated disinformation adversary is even more difficult.