The Emergized thing doesn't count for lumps of dirt, rock and steel bodies attacking an ethereal being like ghosts, even though Dark is supposed to be Special typed it has a lot of Physical attacks. If going by energy as well, Types are their own source of energy, so Normal and Fighting produce a type of energy in the Pokemon World. Hyperbeam wouldn''t exist if Normal types couldn't produce energy. Neither would Focus Blast or Aura Sphere.
Fighting and Normal are two of the more Mundane types. The Mundane cannot interact with the Otherworldly. So Normal and Fighting can't hit Ghost types without a special medium (Scrappy or Odor Sleuth/Foresight)