[gldalmaso]

The moderators could perhaps not be looking directly at the video but a blurred version of it, along with a tool to reveal some part of it. That way they can infer what is going on without looking at the raw material.

Another thing they could possibly do is to include fictional content in the bulk, so that the moderators could at some level believe no real person went through that.

It is unrealistic to expect any normal person to have a grasp on what adverse effect will have on their mental health over time. You can walk away from being a garbage worker, but you can't unsee disturbing imagery.

[jandrese]

I'm not sure it would be a good idea for Facebook to produce fake child porn in order to try to provide deniability to moderators.

The moderators are sadly enough going to become experts on this stuff in a hurry, it's not likely that you'll be able to fool them anyway.

[antepodius]

Besides, the people hired to produce fictional child porn would just end up suing facebook for the mental damage incurred to them, same as the current case.