Samtemdo8 said:
And because the Deep Ones and Dagon are far more recognizable and memorable then indescribable blobs of tenticles and mass.
Nyarlathotep better examines perhaps a Great War era sense that the world was going to be cleansed by conflict that Lovecraft lived through and likely inspired much of his ideas of cosmological horrors beyond the mind to process their inhuman dimensions and raw chaos.
It's also a shorter read. Also sans tentacles and the like.
Though the Dream Cycle has more than enough contemplations of the nakedly monstrous. As does
At the Mountains of Madness.
Nyarlathotep is rather ... it feels like a weird-science revelation event that is simply one of many at the end of the world no one truly wishes to contemplate just over the horizon, and thus because they do not strive to internalize its dimensions
similarly fall prey to it. Perhaps more mercifully, perhaps not.