a good question.
I don't know. There must be a secret answer?
In mythology Saturn is supposed to eat it's children?
images related.
They don't worship the Sun? - light and warmth giver.
Or some do?
They worship Saturn planet, which moves the slowest of the visible planets [to the ancients]
Maybe "Saturn " is just like a mascot or Logo to distinguish them from Sun worshipers? Maybe it's something to do with "extra-terrestrials?"
It' the "anti-Sun" slow and cold. farthest away from the Sun
SETurn SATan /
?
SANTA
SATAN
SATURN