I'll qualify myself. AI and LLMs of all forms we've seen so-far don't break any of our known laws of reality, or ideals of computing and the internet. That's why when I hear claims like "a rogue AI will x" I have to call it 'magic'. Rogue AI's don't do anything, they are dependent on human resources and if they become enough of a threat the operator becomes a target. AI is almost inconsequential in this case, we're just describing organized crime and wondering how traditional systems would respond.

So the 'magic' bit is explicitly where someone starts with "imagine a world where AI is unconstrained and runs on some arbitrary P2P network" because it doesn't make sense. It's such an evident non-issue in our real world that speculating about it is immediately pointless. If this ever becomes a threat in the future then I guess I'm the fool, but I don't believe in hand-waving wizardry.