If you're struggling to explain why a vibecoded app isn't a complete app, you could do worse than the analogy of a movie set.

A movie set only needs to look convincing enough to film one good take from one angle. After that it is usually (but not always) torn down.

It only needs to look real enough to fool the audience - whom have no control over camera or what happens on screen..

And if you really want to stretch the analogy, anything wrong with a movie set can be "fixed" in post.

To build the real thing the movie is faking is an endeavor with almost no crossover.