I don't doubt of course that reports intended for government agencies or security experts would have those details, but I am not surprised that a "blog post" like this one is lacking details.
I just don't see how one goes from "this is lacking public evidence" to "this is likely a political stunt".
I guess I would also ask the skeptics (a bit tangentially, I admit), do you think what Anthropic suggested happened is in fact possible with AI tools? I mean are you denying that this is could even happen or just that Anthropic's specific account was fabricated or embellished?
Because if the whole scenario is plausible that should be enough to set off alarm bells somewhere.
It's like the inverse of "nobody got fired for using IBM" -- "nobody can blame you for getting hacked by superspies". So, in the absence of any evidence, it's entirely possible they have no idea who did it and are reaching for the most convenient label.
Instead the lack of a paper trail from Anthropic seems to be having people questioning the whole event?
So yes, probably 100% of criminal enterprises are paying off officials, but if that's the definition of "state sponsored" then the term loses any meaning.
EDIT I guess there's also "legit" businesses like Palantir/NSO group, but I would argue any firm like that is effectively state-sponsored as they are usually revolving doors with NSA-type agencies, the military etc.