Having those on porn sites is fundamentally harmless. No one stumbles across a coworkers revenge porn in practice, they get sent it by a vengeful person who acquired it by other means.
Sending a pic or video is not substantially more difficult than sending a link. The revenge porn stuff is a red herring.
So in your opinion, revenge porn is harmless unless an acquaintance sees it?
That's an incredibly repulsive take. It's also increasingly illegal, so your opinion of it is thankfully irrelevant.
Also consider that we will eventually have face search for the internet, so someone could take a photo of you from LinkedIn and find all the places that face appears.
Sending a pic or video is not substantially more difficult than sending a link. The revenge porn stuff is a red herring.