I'm not suggesting that moderation is easy to automate. I'm saying Facebook is an advertising company that cares about content moderation exactly as far as it impacts their advertising business and no more.

They have no concern for the moderators or the content, they just want to solve this problem (as it relates to profit) as cheaply as possible. At this point in time they believe the best way to do this is by utilizing low-cost labor.

Facebook could easily devote more resources to caring for these moderators but they don't because doing so has no further positive impact on the bottom line.