As it stated, that everyone who have spend their life to serve, like paladins and priests, will be sent into Bastion, in their afterlife.
Thiernax was a priest of the Elune, and her voice in his world. He have spend his life to serve to the Elune. He also was a Night Warrior.
But after he died, he was sent into Ardenweald, to the world of druids and hunters… The same place where his boyfriend Qadarin was sent. But it’s ok for him, since Qadarin was a druid.
So the question is why Thiernax is in Ardenweald? Did Arbiter just made an special exception to Thiernax, just to not to split a couple? Or does that means that Elune actually == Nature and Druids stuff?