And yes, photoshopping your crush's face onto a naked body is just as unethical and immoral, even if done in the privacy of your own home, for the same reasons I mentioned above.
Compared to deep fakes, however, it has a much higher effort, lower reward, and less realism, which acts as its own inhibitor. Deep fake generators are becoming trivial to use, and not just for one or two pictures but for as many videos as you'd want. That's going to result in a very different driver of obsession.