At the end of the sequence, Luther turns on his master in the end and helps Kara and the child escape. He had a change of heart after seeing the child attempt to rescue Kara, suddenly realising his chains and then choosing (ugh) to break them. Androids are supposed to be all the same race with pigmentation never acting as a differential, but Cage can't conceal his own writing here. He clearly employs the 'white woman teaching black man about how to be free' trope, a nasty leftover from the darker pages of American suffragette history: the white woman's burden.
Cage codes the androids as black, trying to argue that their plight is the same as that of boundpeople. He doesn't make androids black — no, he does something worse: he compares robots to black people. He may deny them, but the parallels are undeniable to us and everyone else. There is a direct comparison being made between American slavery, and his fictitious robot game. Again, comparing non-people to people who were treated as property isn't a great analogy. In fact, it's dumb and racist as shit.
The parallelisation becomes an aestheticisation, with no allegory to follow through on. The perspective of "imagine what robots would endure" is embarrassing and pointless without an active metaphor. Cage has constructed a fully realised world of legal discrimination and labour exploitation that doesn't signify anything outside of the game itself. But he vehemently denies any real-world parallels or analogues, despite using them to prop the game up.
Even though Cage doesn't want to invoke any historical or racial allegories, the way he communicates androids as being an oppressed subject places them in a real world analogue. Because, well, if you reference a real historical event, it contextualises the message. So the whole game winds up being a shuffle about how lifeless things are the new black people of America.
