Moving the goalposts a bit here, aren’t you?

Clearly the author knows what he is doing, even if you think it isn’t a sensible approach.

It might still be true that LLMs make it too easy to create a broken design and don’t warn you if you ask for something already exists.

The thing is, the example you decided to pick on does not work.

You accused the author of having fallen into the ‘vibe-coding trap’. He clearly did not.