The guy wrote code depending upon an external data file (one that the LLM didn't have access to), with code that referred to a non-existing column. They then specifically prompted it to provide "completed code only, without commentary". This is idiotic.
"Dear LLM, make a function that finds if a number is prime in linear time. Completed code only! No commentary!".
Guy wanted to advertise his business and its adoption of AI, and wrote some foolish pablum to do so. How is this doing numbers here?
I would expect older models make you feel this way.
* Agents not trying to do the impossible (or not being an "over eager people pleaser" as it has been described) has significantly improved over the past few months. No wonder the older models fail.
* "Garbage in, garbage out" - yes, exactly ;)