Inferring properties of the authors of some text isn’t itself something I consider wildly useful for takeover, but I think of it as belonging to this more general cluster of capabilities.
You don’t? Ref the bribery and manipulation in eg. Clippy. Knowing who you are dealing with seems like a very useful capability in a lot of different scenarios. Eg. you mention phishing.
Great post! I’m all for more base model research.
I hope the claim was normalized and inflation adjusted, otherwise it’s the same as ‘the latest protest-riot in the world’s richest country’!