The fun thing there is that they seem to have then turned around and deified a bunch of mytho-historical figures like Kahless, much as how on Earth (and in many other SF universes) any time you kill off one set of gods you end up with the new gods or the One True God or whatever. (and they tend to be much more bland / un-fun than the previous ones, e.g. the intentionally dull Faith of the Seven in “Game of Thrones”)