Nor does day VFR depend solely upon position fixing by ground or water.
But I can see that you’ve come to the conclusion that the operational requirement in Item 4 of Table 2.07 of MOS Part 91 has no application to NVFR operations in G at or below the higher of 3,000’ AMSL and 1,000’ AGL. Presumably, then, the rules (as you interpret them) do not prohibit a NVFR departure from an unlit aerodrome into inky blackness in which the pilot can’t see sh*t, provided the forecast cloud base is OK. (Just to circle back to the original theoretical question…).