I do think the other examples you gave have one significant and fundamental difference - no one would mistake those things as being real. The problem with deepfakes is these have a similar social impact and capcity for harm as real nudes do, only there is no element of consent. You could ruin someones life quite easily with deep fakes, but not with your lewd poetry or sketches. So it seems reasonable to me to ban these with a blanket ban.
I would prefer we lived in a world where that wasnt neccesary, but for every technology you must imagine the most sinister and exploitative application and realise that someone will try that and worse. How do you even begin to combat deepfakes and the social problems they bring? how many bodies are considered acceptable until we get it right? Possibly, its best to over reach a little then relax the grip rather than to take it slow, given what is on the line for some.