Photoshop is a technological tool that can be mis-used like any other. I just believe it will replace conventional darkroom technology because it is simply easier to achieve the same results and it gives more tools to work with, and more control over those tools. Now, if someone wants to continue using conventional darkroom methods, because it is a challenge, or for reasons of nostalgia, like some photographers who still shoot daguerreotypes, that is valid too. But let's not try to question the ethics of the tools of digital enhancement. Tools don't have ethics.
People have ethics.
Again, it's not the tools, it's what you do with them. But people have been faking photos since the invention of photography, this is nothing new. In both instances, the images are complete fabrications. The fairy pictures were created decades before the modern computer was invented, and Uelsmann's perfected his craft in the darkroom, also before computer programs like Photoshop. People have been making things up since the invention of language.