To be completely honest, I find this disturbing, horrible and morally wrong. Certainly when it comes to creating some fake "leaked" sex tape and claiming that it's her...that is particularly defamatory and unethical.
I completely understand having fetishes and sexual desire toward an attractive person, in this case a celebrity, but taking it this far and potentially damaging somebody personally and emotionally is kind of disgusting.
Now, if you are of legal age and want to fornicate on camera and get paid to do that, I have no problem with it. You are basically a prostitute, but if that's what you wanna do, whatever.
You can't legislate morality, but there are laws against defamation and slander.