The only way that could work would be if there was 100% test coverage of every input scenario, whether documented as part of requirements or not, otherwise the regenerated code is almost certain to have regression bugs in it.
Most complex production systems do not have this level of documentation and/or regression coverage, nor I suspect will any AI-generated system. The requirements you fed the AI to "specify" the system aren't even close to a 100% coverage regression test suite, even of the product features, let alone all the more detailed behaviors that customers may be used to.
It's hard to see mission-critical code (industrial control, medical instruments, etc) ever being written in this way since the cost of failure is so high.
Sadly what OP said jives well with our presently low standards for most software. Regressions and bugs are routine, and often deprioritized because "90% of our users don't care about this".
