The Tidemother

In Stormsong Valley, we're presented with the following story: (SPOILERS TO FOLLOW)

The Tidesages are an order of priests in Kul Tiras who worship a goddess known as the tidemother. They listen to voices within the ocean and use their powers to bless ships within the Kul Tiran navy and provide the appropriate amount of rain to allow Stormsong Valley to produce enough food for the nation.

When we arrive, there's a crisis - the Tidesages are holed up in their temple, the Shrine of the Storms, and are refusing to locate the missing Kul Tiran fleet. Indeed, they're even blocking trade with the rest of Kul Tiras.

We eventually discover that Lord Stormsong has been driven mad by eldritch whispers - the voice from the depths that Tidesages listen to has turned dark and convinced Lord Stormsong that they must transform themselves into monstrous K'thir (who look 100% like Mind Flayers, aka Ilithid, from Dungeons and Dragons) and go to live beneath the water. The K'thir are pretty clearly linked to the Old Gods, and are accompanied by Faceless Ones, and as we later find out, Azshara.

A rebel faction of Tidesages resist this Old God corruption, trying to keep the Tidesage tradition pure and fight against Stormsong's corruption. Sadly, it seems as if Stormsong is a victim in this, as he was once a rather benevolent figure.

But here's my question: Is this faith corrupted? Or is it actually just taking its true form?

Obviously, anytime in Warcraft when you hear about people listening to whispers from deep places, you've got to be really skeptical (I'm not predicting some grand reveal, but I also feel like we should be taking everything Magni says with a grain of salt, just in case.) On one hand, the Tidepriests actually seem a lot like Shamans (though given their penchant for cloth armor, I don't think that's an indication of Kul Tiran Humans getting that as a class option,) and listening to the water in a "spiritual communion with the element of water" would be considered kosher in Warcraft lore. But let's look at a couple things:

If they were listening to the main god-like ruler of water, it'd probably be Neptulon, who is male.

As we march on the Shrine of the Storm toward the end of that quest chain, we encounter three objects: The Tidemother's Wrath, the Tidemother's Pride, and a third one I can't quite remember the name of (and I'm having trouble reaching WoWhead right now.) Now, remember the final boss of Eye of Azshara in Legion? Azshara's Wrath. In quests in the western part of the zone, we fight off the Naga and ultimately confront a similar construct called Azshara's Pride.

All this seems to be pointing in one direction: I think the Tidemother is Azshara.

Now, you may wonder why there would be so sudden a turn. Were the Tidesages not originally good and helpful to Kul Tiras?

The thing is, I think Azshara is someone who has very longterm plans. She has been around for over ten thousand years, and Kul Tiran culture, while ancient by human standards, got started well after Azshara had established herself beneath the waves.

Wouldn't it be just like Azshara to gradually, over many generations, shape Kul Tiran culture to suit her needs? Humans on Azeroth have proven themselves a resilient and adaptable race. Wouldn't Azshara want to have some measure of control over the most nautically-oriented human kingdom?

I suspect that the K'thir and corruption of the Tidesages was the plan all along. The question, then, is what she plans on doing with Kul Tiras.