The ubiquity of AI fakes will necessitate a cultural shift. Honestly, the world is going to be a nightmare of misinformation soon and nudes may very well be the least of our worries.
What other options do we have? An ironclad verification system for any fabricated content? Wildly harsh penalties for all caught creating it? The ship has sailed - we won't be able to prevent it from happening.
I'd argue that overexposure will make people quickly become accustomed/nonplussed at information we don't believe to be true and verify with the source. Look at how we treat other fabricated content - if I showed you a screencap of the Pope saying "Fuck" you'd want to verify with a source directly.