It's bad enough when people don't notice that they filled in the gaps based on pure speculation and prejudice, it will be even worse when the same happens with the "authority" of a computer.

Maybe there could be a moral obligation for the designers of the training set: trained with the right data, if you say "enhance" once too often the model might overfit into a scene from Star Trek ("after shooting, video footage shows man in command uniform firing at random redshirts, people in medical uniforms miraculously unharmed").