Have you seen this other mod that claims to have successfully achieved that "Crafting bags takes time and proper resources in game"
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=3383728623&searchtext=

I haven't tried it yet but if what it says it does it's true, maybe you could update your mod with whatever this one does 🤔

(apologies for having to create a new discussion for this, I'm a GOG Kenshi player, so cannot comment like everyone else using STEAM comment section)