That people don’t know there are human beings doing this work is, of course, by design. Facebook would rather talk about its advancements in artificial intelligence, and dangle the prospect that its reliance on human moderators will decline over time.
But given the limits of the technology, and the infinite varieties of human speech, such a day appears to be very far away. In the meantime, the call center model of content moderation is taking an ugly toll on many of its workers. As first responders on platforms with billions of users, they are performing a critical function of modern civil society, while being paid less than half as much as many others who work on the front lines. They do the work as long as they can — and when they leave, an NDA ensures that they retreat even further into the shadows.
To Facebook, it will seem as if they never worked there at all. Technically, they never did.