Because it
is literal. The post that Power of Justice linked above is written by HP Zevios. It's important to note that HP Zevios
did not free any of the Demons, so he is just trying to create his own theories about how it happened. So it should just be disregarded. HP Pythia and the others who did free the Demons
always spoke of it as a literal thing. There's a post with evidence from HP Pythia's posts that the binding and freeing of the Demons is to be taken literally:
"Satan intended to make us like the Gods, but was prevented from doing so and cursed by some of the other Gods who wanted us to be destroyed." 1)Why did this happen? Who are these Gods? 2) Why haven't the Gods come to earth yet and put an end to all this? We have been living this Yehuborim...
ancient-forums.com
I'm quoting again some of the evidence from that post: