This is also a nice example of the artist-designer loop where the designer has some words for their idea, then the artist converts that into visuals, and then it turns out some parts got lost in translation.
In this case, the artist gave the character a quill, because the idea for the setting is it's in the future but no longer industrial. But the quill is a bit too old-fashioned for that! Fountain pens have been already invented and you don't need a factory to make one.