>I don't want to go anywhere near name-calling or derision, that doesn't help anyone.
Characterizing your opponent's argument as an appeal to "underpants gnomes" struck me as derisive, if you don't mind my saying.
If space ships operated by an alien civilization appeared in orbit above Earth, wouldn't that constitute a potent danger? I'd say it certainly would because the aliens might be (and probably were if they could travel here) better at science and technology than we are. The AI labs by the own admission are trying to create an alien intelligence as good at science and technology as possible. Yes, they're probably at least a decade or two away from "succeeding" at creating one better at science and technology than well-funded teams of humans are, but the AI labs might surprise us (and surprise themselves) by "succeeding" much sooner : everyone including I'm sure the researchers at OpenAI were surprised when GPT-4 was able to score in the 90th percentile on the bar exam.
Because even the researchers creating these frontier models don't understand them well enough to say for sure that the next model they spend hundreds of millions of dollars of GPU time training will exceed human ability in something dangerous like inventing new military technologies, the time to stop creating new large frontier models is now.
GPT-4 has a lot of knowledge of the world, but it is much less capable than a human is (and more to the point, than a capable human organization like the FBI or Microsoft is) at devising plans able to withstand determined human opposition. One of the things I'm worried about is new models that are much better at such a planning task _and_ have lots of knowledge about things like physics and human nature. One reason to worry that such a new model is not far off is that AlphaZero is better than humans at creating plans that can withstand determined human opposition (but of course AlphaZero has no knowledge of and in fact no way of obtaining knowledge of any part of reality beyond a Go board).