You're asking a question, to which you (and most humans) don't know the answer, and you're (wrongly) assuming a being much more intelligent than you also wouldn't. And by "much more" i don't mean the difference between Einstein and a common person. I mean the difference between a hamster and a common person.
We are still humans, and what we have achieved today would be considered magic by any standards for someone in the medieval ages. Now imagine a super intelligent being and doing something that we, today, would consider magic. It's not farfetched at all. We already have that now vs medieval ages.
You need a similar degree of open mindedness and imagination to be able to discern what such an intelligence being would be capable of.
Or a naive grasp of reality... You can posit all the super intelligence you like, actually creating it is another story entirely.
For instance, it's clear the transformer architecture is brute force and memory hungry... Why hasn't ai improved on this? After ten years still no luck?
Doesn't look good does it?
Transformers require massive data and compute, the smarter you want you're AI, the worse this situation gets. This isn't a hard limit but it certainly limits how quick it happens, and let me tell you, general purpose robots aren't happening anytime in the next 25 years
"Strikingly, this concern is being openly voiced by the very people who have the strongest incentives to project confidence rather than alarm: the founders of the largest AI laboratories."
It's amazing how a writer can write something like that and not even question the premise of someone with the "strongest incentive" to be "critical" as not being a marketing ploy.
Still, Ai can move into physical space, as more and more robots of all kind are unleashed.
There are troves of leaked data out there. It's just a matter of (short) time until someone puts their AI brutes on it.
But that doesn't make any particular AI controlled process all-powerful. Self improvement doesn't do that either. There will be many self improving AI processes playing many different roles pursuing many different goals.
This might seem like I'm writing a nonsense, but read it again.