[lotophage]

I don't doubt that the belief has always existed somewhere; tribes with barely any outside contact, for example. I suspected that the belief was once reserved for a few eccentric crackpots and didn't have the momentum to be a movement until the last decade or so, but maybe I'm wrong. Flat-earth theory probably wasn't the greatest example. I think a "myth" connotes something a bit more innocent than a delusional belief or conspiratorial thinking (I'd call the Loch Ness Monster an myth, but I'd call the "moon-landing was faked" a conspiracy).