A game reviewer suggested the quest may well be a parody of mindless fetch and collect quests
I can't deny I had the same filling when I've realized there are more than a head and those are not in the same area.
It's the kind of larianism I can enjoy in small doses.
This one was a too big dose for me. Especially when there is one more "quest" (which is not marked as one) that I haven't finish, too - the one where you have to collect some inner body parts of some mummy or whatever.