But with this argument you could blackmail someone whether or not you have some evidence.

You indeed can. Any of your coworkers can report you to HR right now for allegedly saying to them in private that you find underaged boys attractive. Wouldn't that at least be quite stressful to you?

Personally, I've been on the fence about doing sex work. On the one hand, I'm nervous about people identifying me based on my face or identifying marks, but lately I feel like I shouldn't care, I should be open about it and that way I can't be blackmailed.