OK, sure, but this isn’t evidence of what you’ve posted in the comment you linked me? Maybe I misunderstood what you are getting at.
They are weakened. Meaning their light was drawn out of them, and needed to recoup. Even just the final sentence there: “It should be noted that some darkened naaru still appear to harbor altruistic intentions”
Where they truly do become part of the void is laid out even further in that article:
“Thrice, darkened naaru have also been shown to transform further into void gods; though in all known occasions this was only when their light was forcibly drained by an outside party, so it does not seem to be a natural phenomenon and is normally extremely rare”
I assumed this is what you were talking about. So no, they do not ‘swap to dark’ when they become darkened. It means their light is fading. Think a light bulb that’s slowly fading out. With time they can recover. If they’re forcibly drained of ALL light, (and possibly even further beyond, it’s unclear), then they might become a void god and yes. But that’s not a natural process for them as far as we can tell. After all, naaru DO die. It’s not like they all fade away and become dark when they die, at all.
The fact they can turn into void lords once all their light is drained is, in fact, more evidence that Void gods/lords are specifically a result of 100% lack of light, or that they are some kind of darkness incarnate.
Also this doesn’t actually matter in the end, because the underlying problem isn’t one of theming and never will be.
This isn’t actually relevant, though.
I’m saying the seeds were planted, and they were. What type of magic did C’thun use in the raid fight? What spell were his tentacles casting? What kind of magic did the Yogg-Saron fight feature?
It seemed to be a clear theme with old gods that shadow magic was absolutely something they were using, and they had theming pretty closely aligned with Shadow’s current spell list, too.
But all void magic IS shadow magic, and it makes total sense for a priest to dabble in it. That’s what I’m saying.