j-e-f-f-e-r-s said:
Stop being me, you're scaring me with how much our arguments align!
And don't forget that the possible creators of the Xenomorphs, the Space Jockeys, have been established as our creators, too, in
Prometheus. Apart from being a complete rehash of the novella
At the Mountains of Madness, it also shares the idea that we are, as you said, not the creation of an anthropomorphic (white male) and centralised deity who is also responsible for the creation of everything. In that logic humans, specifically, serve a special role in the personal plan of this weird, omnipresent, patriarchal figure. Instead, we're the experiment of an ancient and incomprehensibly intelligent alien species.
Moreover, this lovelessness is reflected in the role of the Space Jockeys in
Prometheus, here dubbed the Engineers, as the reunion with the creator and its creation results in a rather lukewarm reception. I say lukewarm because the body temperature of everyone inside the room unfortunate enough to get within the grasp of the estranged father figure is lowered to room temperature (and Weyland makes his inevitable slip into the great nothing - the "merciful embrace of oblivion").
However, it has some rather un-Lovecraftian elements in that we're most likely the project of an abandoned experiment or project rather than the random side-effect of a failed experiment. I am, of course, talking about the origins of our species: the protoplasmic ooze left behind by the shoggoths. Yes, we are all part shoggoth.
Furthermore, Weyland-Yutani is more an example of a world in which rampant utilitarianism and neoliberal capitalism has reached an uncontested dominion that is close to totality. Though amorality is most certainly found in the multinational companies of our contemporary neoliberal capitalist age, it is not a trait of Cosmicism. The most important argument against the reading of Weyland-Yutani as an example of "Yog-Sothothery" is that our species' notions and concepts of society, culture and government are simply that: notions and concepts that are, as Nietzsche said, "all too human." Every aspect of Homo Homo Sapiens is soon rendered meaningless once we witness these beings from Beyond and learn that everything we considered stable and certain turns out to be an untruth we taught ourselves. The alien causes irrevocable and detrimental realisations of humanity's own alienation and estrangement to the cosmos; life no longer has any meaning and all sanity and hope is lost as we are, according to Castro, taught "new ways to shout and kill and revel and enjoy themselves, and all the earth would flame with a holocaust of ecstasy and freedom."
Freedom, however, should be translated as our inevitable extinction upon learning the forbidden knowledge of these otherworldly beings their existence. Would you teach an ant to be like you? Would you mourn the destruction of stability if you were to unwittingly step on an anthill? Most people compare the relationship of the Old Ones and humanity with humans and ants, but I think microscopic bacteria or fungi collecting in the dark and barely perceptible corners of your kitchen room would come closer to our inferiority on a cosmic scale in the amorphous and bubbling "eyes" of these entities.
On a side note: there might be factions of opposition within the
Alien and
Predator universe challenging this form of a multinational and capitalist power structure that Weyland-Yutani Corporation embodies; as Foucault theorised, power is always productive because it always produces resistance. It would be very interesting to see someone expanding on this idea seeing as it being a rather one-dimensional representation of this fictional world.
... so I have to fix all that first /nod 
