I think it's far worse than even this. Facebook reportedly receives over 50000 posts per second on average. With 200000 moderators, each one would have to read

I think it's far worse than even this. Facebook reportedly receives over 50000 posts per second on average. With 200000 moderators, each one would have to read a post every 4 seconds every hour of every day. I would place the number of human moderators at least an order of magnitude higher.