I understand where you're coming from. I can imagine myself reacting similarly if HP announced that they've invented a printer so powerful that it can print documents you don't have access to. But I don't know how to engage with this response, other than to say that Anthropic's story is plausible to me and everyone I know in either AI or security.
Aren’t you convinced by the posts by security researchers (and more to the point, non-security-researchers) claiming semiautonomous (or better) 0day discovery with these tools?