While you're right as in, it's nothing new given a trail of info, here they didn't need to do classical feature engineering, but purely LLM (agentic) flow. But

While you're right as in, it's nothing new given a trail of info, here they didn't need to do classical feature engineering, but purely LLM (agentic) flow. But yes, given how much information is self exposed online I am not surprised this is made easier with LLMs. But the interesting application is identifying users with multiple usernames on HN or reddit.