Actively sharing fake nude images online has always been legal. It's not even a close question. The practice is neither harmful nor dangerous. Did you look at that link?
Yes but the genie is out of the bottle as web say. Deepfakes and AI gen are here to stay. We can try to go after every tool out there but it'll be just as effective as the 'war on drugs'.
We'll just have to adapt as a society and realise that what you see is not what you get anymore, in other words most of what we're going to see is false.
But... that's not something you can do. It's impossible.
You can imagine what real people look like naked. That's not a new thing.
https://www.youtube.com/watch?v=p7FCgw_GlWc