Hmm. I guess I read it differently than you do (or you have access to additional info that I don't).
Quote:
Like most ss’ressen, the clutch is ruled by a female oligarchy. The Ashen Hide are devout followers of the Fire Dragon, whom they believe to be a divine aspect of Nier. For their part, the Dark Triumvirate of Canceri is happy to incorporate this small addition to the worship of Nier in exchange for such potent and fervent allies. In recent times, the Milandric Church has also recognized worship of the Fire Dragon in its doctrine. Whether or not this will have an effect on the Ashen Hide remains to be seen.
To me, this says:
- Ashen Hide worship the Fire Dragon as an aspect of Nier
- Dark Triumvirate added the Fire Dragon aspect of Nier in order to gain the Ashen Hides as allies
- The Milandric addition of the Fire Dragon may or may not have an impact on Ashen Hide relations
Primarily, I do not see anything saying that the Ashen Hides worship the Dark Triumvirate version of Nier.
The only thing I see in the whole entry that might make them tough to fit into the campaign is that they view the Black Talons as implacable enemies.