This person was a VC doing a public experiment in vibe coding.

The production database was just synthetic test customers.

It wasn’t a real company. It was an experiment in public to demonstrate the capabilities and limitations of vibe coding by a non-technical person.

Then his demonstration is successful.

They were able to successfully demonstrate that LLMs as claimed, make mistakes

I mean, I kind of agree, but _also_ "well, everyone knows that the claims of these vibe coding outfits are bullshit, and no-one should use their products, so if anyone uses their products it is _their own fault_" is a slightly weird take, that would not really fly with, well, products in general.