On the one hand, if they were really concerned about their software producing a self-replicating and adapting AI worm, they'd take steps to make sure that never happens. If it did happen, they'd be sued into oblivion. They probably just want to pump up their IPO and maybe get some regulatory lock-in to make life tough for late-starting competitors.
On the other hand, a self-replicating and adapting AI worm does sound legitimately pernicious. Not world ending, but possibly an end to the online world.
I'm not really seeing how an AI worm is meant to be ending the online world. Even a 9B model is a significant chunk of RAM on consumer devices.
They talk about distributing layers across devices, but then you'd have communication on the network and hours of driving the devices full tilt to get through even a single turn.
There's so much that can be monitored to catch these, even if we assume that the worm could hack the OS's usage monitors, it can't hide the heat and power draw.
Datacenters and PCs would adapt, requiring better monitoring than the AI companies' method of letting things run blindly for days/weeks.
IoT would be tougher, but it is also the weakest hardware, sometimes battery powered, thermally constrained, lacking in memory for processing even one layer or lacking the necessary connectivity.
Would the Internet going away be world ending? Interesting to think about. I think it would be pretty damn devastating on the scale of Nuclear war but slightly more of a slow burner. At least with Nuclear war survivors can turn the Internet back on again afterwards.
On the other hand, a self-replicating and adapting AI worm does sound legitimately pernicious. Not world ending, but possibly an end to the online world.