Radical idea: if your service requires subjecting lots and lots of workers to scarring images, the correct solution is for that service not to exist. Facebook doesn’t have to let people post material to their site with very low barriers to entry. Granted they have to if they want to continue to be what they are and to make tons of money... but maybe they shouldn’t continue to be what they are and make tons of money i…
Any place anyone can add any user content has this problem. Anything with an input box and a file upload would qualify as your not existing solution.
I think the problems that Facebook, Youtube, etc are seeing stem from the fact that the content is much more public, thus in much more need of moderation.