Remathilis
Legend
Claims that Swords & Sorcery fiction is written from an Athiest worldview (a cursory glance at any Conan story or Fafhrd and Mouser fiction reveals a multitude of deities) ...
I think the OP was looking for a "classicist" view rather than an "aethist" view. S&S certainly have gods, but unlike the Judeo-Christian "all knowing, all loving" god the OP assigns to HF (the jury is still out on that association, but lets assume he's referring to the Tolkien/Lewis Christian analogy and roll with it). they are not either all knowing OR not all loving (removing the meddlesome rationale for evil & suffering to exist in the world). A character could be favored one moment, cursed the next, and he has no recourse except to accept the fate of the deities because they are more powerful than he. This the worldview of classical Greco-roman faith as well as other panthesitic faiths.
There is certainly nothing that assumes a godless world in S&S, just one where the deities are unknowable or unmoved by humanity at large.