I like this, but it should still be an actively used skill to facilitate intent and proper communication with the party. I'd be pretty upset if this happened when I didn't want it to.
Square: "We can't change Living Dead because of lore to the job"
Also Square: "Astrologian will no longer have Nocturnal Sect and we re-wrote Summoner quests to better fit the Endwalker skill changes."
Yeah... Neglect is definitely a larger playing factor here.