Ok this might be just me but when I physically see those un-people standing there I get this odd feeling.
An NPC always has something to say even when they're merchants and layer bazaars are attached to real people but retainers are something unholy in-between. Their purpose in life is just to stand there in the half empty rooms and stay quiet while the happy shopping music is playing endlessly.
It's like some limbo that feels like a work of art built to criticize the mindless consuming shopping culture.
Imagine going to a jewelery shop with the merchant just standing there. No movement of any kind. You put a piece of necklace on yourself in front of the merchant's stare that looks past you into nothingness. Put a roll of notes in his pocket and leave without either of you saying anything.
The merchant stays behind the counter.
Never moving. Endlessly eyes open staring into the distance.
Happy music keeps looping on his deaf ears.
Am I completely crazy or does anyone get creeped out by visiting that place?