Okay, so silk cultivation is a major historical aspect of East Asian culture and technology, right? So presumably the same goes for fictional Othard.

Except on Hydaelyn silkworms are nothing like real-world silkworms. Real world silkworm caterpillars are tiny docile things content to eat mulberry leaves all day. On Hydaelyn silkworms are the size of a full-grown Auri woman, extremely vicious, and with silk cocoons which they use to immobilize prey, more like a spider would than a moth larva.

Over in Eorzea weavers largely content themselves with gathering discarded cocoons found in the wild, so maybe that's what they're doing in Higashi and Doma too . . . but if they aren't, how the hells are they farming these things?