Literally from TFA:

> “We were somewhat surprised by how good the advice was,” Choukhmane said. “Especially when you read the kind of questions people asked, it was not a given that the advice would line up with what academics think are good financial principles.”

TFA goes on to point out that more academic prompts did better still -- but a major point was that, even with naive and simple questions, the advice was still surprisingly good.

And similarly, quoting from the article which TFA cites:

> First, following LLM advice would move most survey respondents closer to the prescriptions of life cycle theory relative to their current behavior, including broader participation in diversified equity funds, equity shares that decline with age, and sizeable saving buffers. Second, replacing individual-written prompts with academic prompts moves LLM advice even closer to life cycle theory, with better consumption smoothingand less reliance on simple heuristics.