That's what Failsafe say the vex call us, anyway.

Osiris theorized it years before, as well:

I don’t know where you have gone, but I can no longer send Ghosts out to find you. Some come back— with tales of your death or how you went seeking answers from the far reaches of space and time. That you found a way to explore the Vex gate networks. That you've made breakthrough after breakthrough as to their origins— theories that a Guardian could not be simulated, that the Traveler might be an ontoformer or a god-incubator, that the Vex had diverged into multiple groups in order to secure 'an end state for every possible configuration of reality.’

With any luck we’ll know more soon!

I think the main limitation of the Vex, and most of the Destiny universe is that empires don't seem to be that good at violence. The Hive, those omnicidal maniacs, still just run at you with hordes of thrall while the knights occasionally shoot from the rear. They just seem inferior to most modern military forces.

Good point. Also, their bodies are quite inferior to Exos. Slow, jerky movements, with their vitals unprotected. You would think that if they were thousands or millions of years old, they would have developed better motor skills. Perhaps that's not a priority since they can teleport across space and time.

IIRC, the lore of the vex is that they don't actually have or use proper weapons. They're shooting us with the tools they use to build their machine worlds. Welding torches and what ever else they had around. My point being that what we're fighting are not, expressly, combat units armed for battle, but rather the maintenance crew building a new computer. This is just Joe from IT. Wait until Maya the super-soldier shows up. That'll be a real fight.

To me it seems like the "skill" of the enemies seems limited because we're guardians. Against regular humans, I'm pretty sure they would crush us. Maybe they're all super deadly, but we're just that good.

I think it's more a limitation of AI for the mobs in game. Advancing while slowly firing their weapons just isn't impressive. Even then, the fact that most of them can be defeated by bullets, and humans are very good at shooting lots of bullets, still leaves them at a disadvantage.

I've often wondered about a sci fi universe that has most other life forms never develop long range weapons, given that those species don't have the hand eye coordination or hunting techniques that humans evolved. Instead every other race tries to close in and claw each other to death with various exotic melee weapons. Then humans come in shooting everything and it throws this massive monkey wrench into the galactic civilization. Too bad I never have time to write it up.

Yeah.

I would say the Vex understand that the Light and Darkness exist but maybe they want to go their own way. Even though they recognized that both killing and worshiping the Darkness could grant them power, we are specifically told:

Being an efficient machine, Quria manufactured a priesthood and ordered all its subminds to believe in worship. Then it set about abducting and killing dangerous organisms so it could bootstrap itself to Hive godhood. For some Vex reason, Quria never attempted to introduce worm larvae into its mind fluid.

Ultimately, I think the Hive are doomed one way or the other. If the Light defeats the Darkness then the Hive lose. If the Darkness defeats the Light and there is nothing left to kill then the Hive's worm gods will turn on them and they still lose. It seems to me that maybe the Vex were smart enough to tap into the power of the Darkness without tying themselves directly to it. If the Darkness loses, the Vex just have one less powerful enemy.

As for the Cabal, most of them do seem to be separate from this whole Light / Darkness thing. They conquered races through sheer numbers and tactics and willingness to destroy entire systems if things didn't go their way. That said, Gary certainly saw Humanity's Guardians and aspired to be like that. Worse, Calus seems to have directly encountered the Darkness as is leading it to our solar system:

At the edge of the universe, I stared into the infinite deep. It stared back, and was pleased. I would become the herald of its victory, and bear witness for all creation.

The Leviathan came to a halt before a wall of infinite void. It could go no further, as the navigation system had suffered a cataclysmic failure. The course that the conspirators had set crossed a space that simply didn't exist.

I don't know how long we traveled. Years? Millennia? Time had ceased to have meaning as I wallowed in the despair of my exile. But this event shook me out of my stupor. At the edge of the universe, we had found something. No—we had found a nothing.

From the seat of my observation chamber, I stared into the perfect void. Only I, a god, could understand what I witnessed. It was a thing greater than myself. And if such a thing exists, then I, too, can become more.