Very observant, I made this realization slightly before you posted lol, but given the nature of the fairy, differing from a carbuncle in that it originates from the scholar soul stone, in addition to what I posted in my edit, I find that it just serves as more evidence that arcanists are not educated in the knowledge of silence and while I don't remember exactly, it has been a while since I did the original set of scholar lore, the fairy is an autonomous creature that exists independent of the scholar and has it's own set of knowledge, therefore leading me to believe that perhaps even scholars were not adept at silencing but their fairies were if that makes any sense?