well poke around a peasant mind to see what info they know through dfhack, and realize they have about 3 people they are knowledgeable of 1 being their god, and 2 humans they known from birth.
starting to think this is probably why folks aren't getting fame, the peasants don't really know or care about the folks you slaughter as to do so they need to greet them
ok uhh it seems this game dialog option stuff is wild
so the "hey go out and kill this person please" doesn't add a monster or the person you need to kill to the peasant's list of folks they know. What does add to the knowledge of a npc in DF is if you press them on finding whereabouts, as it could end up with a I dunno or randomly adding a new historical figure id to that person's list of people they know.
so in doing so reveals npcs don't have any info on the monsters they talk about as it's randomly given to them and probably has some coding to check to see if there anyone in town that knows the whereabouts of said topic if pressed.
so that person with 3 people they know one being a god ended up learning 3 new folks also has a bestiary of 3 being 2 castes of humans and the bark scorpion adventurer that talk to them
said person some how after hearing of ini dreamlearning as someone for a guide ended up knowing that they were their neighbor.
imagine trying to convince folks of an elk you murder when none of them have seen an elk as their bestiary only lists 2 castes of human and probably what type of creature you shown up as.
I might have to swap to a non modded save to see if this is the same or post apoc zombie wasteland peasants don't know what animals are.
so went and loaded up some human lord from a different save and notice they got no clue what anything is even a human.
to note the adventurer bestiary tends to hit 400+ entries
oh uhh minor thing the lord later after moving around updated the bestiary with some humans and a dwarf (and 2 bogeymen races as this is the save with the bogeyman musical group)