Jesús Christ, are people still obsessed with the Cubone thing from gen1?
There are ghost type mons that weren't dead stuff, ghastly and Gengar go from sentient gas into living shadow, mismagius and misdreavous are their own entity, Bannette is the first true possessed entity, dusclops is just like misdreavous, Sableye is a critter that fears of minerals on a very dark environment, drifblim is its own entity despite looking like a Ballon, spiritomb is the first mon referenced to be something else, Golurk is a golem, jellicent is its own thing, chandelure line are a bunch of predators that use their object like psyche to feed on the life energy of others, Aegislash is apparently a possessed sword that has genders, gourgeist is a jack o lantern with interesting habits and trevenant might be stretching it since Ents and sentient trees or possessed trees actually exist as their own things in folklore.
Ghost never meant dead.
Remember the dex outright states 3 things about Marowak, Cubone becomes strong through the bond with its trainer and evolves, Marowak has a secret bone yard where he gets his weapons, THE SPECIES WAS WEAK AND MEEK BEFORE THEY ADAPTED TO USE BONES, this changed them to vicious fighters and changed their behavior, it's not out of the realm of possibility that the base meek Marowak species in a stressful environment developed the ghost type as a way to survive a predator,
Ghost doesn't mean dead dude, nor this is a hint toward the Sephiroth complex people seem to hold on this species, it's perfectly normal for the Marowak line.
