That can likely be said for just about any perk in the chart that belongs to one of the attributes. Not everyone is going to be interested in every perk aligned to their focused attributes. For example, some folk don't want Bloody Mess, or Mysterious Stranger, or perhaps a number of Charisma perks that grant them benefits they're not interested in with their speech character. And yet they're all there anyway. In no way does this not make any less sense.
Now, I'm also in agreement with everyone else who is believing that is Cannibalism. As it seems as clear as day to me. And no doubt addition ranks to the perk will grant the benefit of expanding your appetite to other life forms than just humans as past games have had, as Motsie suggested. That would make the most sense would granting addition benefits to the perk.