My post is better but sometimes I don't have time to read through 9 pages. My mistake.
Actually we work in tandem, as you bothered to produce a screenshot, and mine has the matching framing (with the glass cubicle in the background of both!)
Disclaimer at bottom of frame, during the lobby scene, reads:
"Matchmaking interview and DNA screening required. Customers with genetic abnormalities may not meet requirements for safety certification. No refunds after consciousness imprint. Default payments will forfeit DNA rights in perpetuity."
So the Walters are custom-made slaves, to fit DNA profile of their owners.
Well, that makes zero sense. Faulty DNA wouldn't affect how you instruct a robot, any more than it affects your ability to use a keyboard or speak to a Siri-alike.
I don't quite get what they're getting at either. Maybe the idea is that by this point we've cured most disease etc by having perfected bio genetics, 'Gattaca' and designer babies for the rich have happened, and we have retained 20th century property law which is of course written by and for the likes of Weyland-Yutani.
Maybe 'abnormalities' refers to genetic predisposition to violence, etc. They don't want any potentially unstable consciousness imprinted on Walter models.