Society has a lot of adapting to do, before they lose their superstitious hang-ups and religious bigotry. It will be a long time, if it ever happens at all.
Do I think that society will transform its views on nude images overnight? No, obviously not. Do I think that every person in society will go with the flow and adopt new assumptions about nude images? Also no. But it seems entirely logical to me to imagine that once the average person notices "hey, I am being inundated with 1000x the number of fake nudes that I used to," they will eventually reach the conclusion that "I should start assuming all nudes are fake by default."
Like I get that it feels cozy to think that it'll just blow over but it ends up being a "thought terminating cliche" that gets repeated ad nauseum in these conversations. I think it's reasonable even if you think the problem will pass to have some idea of what to do if it doesn't. And that's more productive!
I'm not sure that's true, though. An evil rumour should be assumed to be untrue, yet they're often believed and often cause significant harm.
Even today, women are judged not on the facts of who they are, but by the image men (and women) create around them. They're already bullied and harassed for their virginity (or lack thereof), "body count" (real or perceived), promiscuity, their conformity to society's standards of beauty, and so on.
Nudes, especially those created specifically to objectify or harass, will harm women. It will harm their self image, it will harm their reputations, it will harm their careers (women are already being fired from jobs because of nude pictures of them on various websites).
People are not rational beings. We can know intellectually that a picture is probably a fake, and it won't change how it impacts us. Especially if it plays on our expectations. We tend to go with our first impression, even if it's later proven wrong.
See: "Biden was shown images of babies being beheaded." An image many of us still have in our mind, even though it was explicitly debunked.
Even today, we believe stories which could easily be faked. We get outraged over stories which have long been proven false. Our belief in stories can even become stronger in the face of such proof.
Unreasonable... humans are entirely unreasonable, and will remain so even in the face of AI.
