Study history.
If you do, you'll see that millenarianism is cyclical and shared by all cultures.
Millenarianists create a timetable for the apocalyptic changing of the world.

During World War II, they saw things they didn't understand, such as aircraft.
The aircraft delivered bounty. Such as canned Spam.
In Pidgin, "'E look like you. 'E got white face. 'E tall man. 'E live 'long South America."
In that sense, cargo cultists are more advanced than climate-change cultists.