I was not arguing for making anything illegal.
"But that's what the argument was about!" No, it's what the OP was about, but this subthread was about the statement that AI x-risk arguments are "pretty hypothetical". Which, I agree, they are; I just don't see how they could possibly not be, even in possible worlds where in fact they are correct. If that's true, it seems relevant to complaints that the arguments are "hypothetical".
To repeat something I said before: it could still be that they're terrible arguments and/or that they don't justify any particular thing they're being used to justify (like, e.g., criminalizing some kinds of AI research). But if you're going to argue that just because they're "hypothetical" then you need to be comfortable accepting that this is a class of (yes, hypothetical) risk that can never be mitigated in advance, because even if the thing is going to happen we'll never get anything other than "hypothetical arguments" before it actually does.
You may very well be comfortable accepting that. For my part, I find that I am more comfortable accepting some such things than others, and how comfortable I am with it depends on ... how plausible the arguments actually are. I have to go beyond just saying "it's hypothetical!".
If I'm about to eat something and someone comes up to me and says "Don't eat that! The gods might hate people eating those and torture people who do in the afterlife!" then I'm comfortable ignoring that, unless they can give me concrete reasons for thinking such gods are likely. If I'm about to eat something and someone comes up to me and says "Don't eat that! It's a fungus you just picked here in this forest and you don't know anything about fungi and some of them are highly poisonous!" then I'm going to take their advice even if neither of us knows anything about this specific fungus. These are both "hypothetical arguments"; there's no concrete evidence that there are gods sending people who eat this particular food to hell, or that this particular fungus is poisonous. One of them is much more persuasive than the other, but that's for reasons that go beyond "it's hypothetical!".
To repeat once again: I am not claiming that AI x-risk arguments are in fact strong enough to justify any particular action despite their hypothetical-ness. Only that there's something iffy about using "it's only hypothetical" on its own as a knockdown argument.