Sapience (1)
My headcanon for the techfolk is that they were available in two variants: sentient ones with human intelligence and legal personhood, and non-sentient ones that could be bought and sold.
You know how sometimes you buy a hard drive and the capacity is a little more than you expected? This happens because some of the sectors weren't made properly and become unusable. Now that drive can't be sold as the 1TB drive it was meant to be, but it can be sold as a 500GB drive, and the consumer gets a pleasant surprise at it being 700GB.
You see where I'm going with this.
Some techfolk were built to be sentient, but something went wrong. Never mind, they can still be sold as mindless drones. But they're not completely mindless. What if some of them are just aware enough to realise what happened?