Nightborne still hold Elune as their deity, but their conception of her is very different to that of kaldorei and sits as yet another schism between the two groups. The kaldorei worship her as a goddess whom they believe has capacity to intervene, is benevolent, and sits in some relationship to the wild gods and ancients. Conversely the Nightborne see her as a distant, distinct being, whom is not actively involved with the ancients (rendering them non-reverent) and certainly doesnât intervene. For this reason their worship of her her (where it exists) is overwhelming secularised, largely attended to as a matter of heritage and primarily academic in nature.
This change in conception of Elune began when the highborne started to prioritise the arcane over natural powers. From this they began to see themselves overwhelmingly as authors of their fate in the world, and as such petitioning divine forces came to be seen as crude and uncivilised. Rather the deity came to be seen as something of a motif, and inspiration for driving elven efforts towards their own brilliance and civilisation. With the cult of Azshara, Elune began to take a lofty, otherworldly position amongst the nobles, whilst their earthly affairs were focussed on their own achievements. This contributed towards the idea that Elune doesnât involve herself in the physical world (and those who believes she does only believe so because they lack the recourse to take charge of their own fates). Tensions developed in Suramar as the urban elf practice of religion began to contrast with the influence Tyrande and other priestesses brought through their interactions with the druids.
When Suramar was placed under the arcane barrier prior to the Sundering, the cut with the capitol left Suramar isolated from the outside world and Azsharas influence. The leading nobles of Suramar used religion to try and retain some semblance of civil order, emphasising their noble heritage in Elune. However in order to safeguard against dissent regarding worry of whether the druids were indeed correct about the perils of the arcane, the authorities lifted the ancient sanctions on male priests, opening up the priesthood to all as a way of trying to prevent schisms within their populace as they believed happened in the first place due to male kaldorei only finding spiritual recourse and authority in druidism.
As a result the first years under the barrier saw a slight revival in Elune worship in Suramar, as a means of weathering uncertainty in the populace. Over time as the nation developed into the Nightborne, their worship once again became overwhelming secular in nature and lacked any real passion or zeal you might find in other races. This is still the case now, where Nightborne priests are probably better likened to scholars of religion and Elunian history than tenders of ministry. This said they still wield holy and shadow powers due to their natural expertise with magic, and their confidence in their ability to do so.
This quiet, non public, non animated form of religion still holds a place of reflecting the noble tradition of the Nightborne, in that though not especially religious as a people, they still identify themselves within the cultural tradition, even if they donât attend temple or engage in active worship any more. This approach also leads them to still view other races (most notably the kaldorei) that still petition divine forces to work on their behalf as primitive compared to their own refined interpretation of religion that has deep roots in logic and reasoning. This is why Nightborne have no qualms about attacking Kaldorei priests or druids- because their interpretation of Elune is so distant and transcendent that they donât believe Elune even cares about what mortals do (if she is even capable of caring at all).
Many Nightborne look upon the incidents at Darkshore with disbelief, believing the more sensible explanation to be a celestial anomaly which happened as a coincidence, rather than believe their interpretation of Elune is wrong, and that she does in fact intervene on mortal affairs. They accuse Tyrande of utilising crude forms of shadow magic that have their roots during the formative years of the kaldorei before proper civilisation, and accommodating it with an Elunian narrative in order to attempt to rouse the spirits of a people that are on the back foot and have taken a beaten. Additionally they believe that Tyrande and others are becoming increasingly unhinged upon realizing that Elune may not care about their suffering, but at this point they will desepratley forward the same narrative they always have, else they have to concede they have been living a lie for several millennia.
So despite their arrogance, Nightborne priests are possibly some of the most liberal priests in Azeroth due to their beliefs. They see no purpose in evangelising and are only really interested in comprehending the divine because it might teach them about the nature of cosmic magics (light and void) rather than a desire for a relationship with some celestial entity. They tend to describe Elune is negative terms (she is Not X) rather than attribute characteristics to her because they believe that being a goddess renders her unique, which makes attempts to describe her attributes unreasonable and a waste of time.