I think this is fair, but it's also somewhat predicated on the threat from deepfakes actually being a bunch of real people believing some big synthetic narratives and presumably taking some action they wouldn't/shouldn't have taken if not for this synthetic narrative.
That may or may not ever happen, but in any case it doesn't smell like a stable equilibrium.
Personally, I'm more concerned that the social gravity it exerts will be towards broad solipsism, which smells like a very stable equilibrium wrt to addressing much that doesn't affect an entire population somewhat simultaneously/equally.
"... believing some big synthetic narratives and presumably taking some action they wouldn't/shouldn't have taken if not for this synthetic narrative."
We have had that already for millenia I am afraid. Deep fakes have nothing on the power of plain old bullshit. Like the pretext of Carthage's "Aggression" against Rome.
That may or may not ever happen, but in any case it doesn't smell like a stable equilibrium.
Personally, I'm more concerned that the social gravity it exerts will be towards broad solipsism, which smells like a very stable equilibrium wrt to addressing much that doesn't affect an entire population somewhat simultaneously/equally.