I have a hotkey in i3wm:

bindsym $mod+backslash exec "xcalib -i -a"

which inverts all colors (btw, I have to `killall redshift` because of a bug). When colors are inverted, I feel almost undisturbed at any gruesome content (for me it's like seeing screenshots of Quake 2 with buggy GPU drivers), yet I can still easily recognise whether the content is disturbing. And when it's a video, I play it at ≥2x speed so that it wouldn't feel realistic for my brain.

I wonder whether those moderators use these two lifehacks.