Ummmm...moving away from "level your crafts I don't think it would make sense to have a meander NPC in Nidhogg's lair, the Aery. Wouldn't make sense for them to somehow be in a cave taken over by pirates, invaded by cultists/voidsents, swarmed by Marlboros, taken by hostile angry dragons, in the middle of a warship in the middle of the lake, or in an area that was previously sealed off until seconds before you unlocked it.

If you ask me, I would look yo these menders for guidance cause obviously they're strong af if they are in these areas REPAIRING your ugly clothes.