Vibe coding?

A guy from mechanical background (arrogant af )tells me we can code machine learning project in half a hour . With chatgpt. I told him you can't it's not like building websites u did. He is like just get a dataset and do it. Yet I'm not able to build using ai wtf am i doing wrong? how tf he is so confident and I'm not!? I know much more than him yet I'm not able to build projects he literally says we can skip theory of machine learning