My team experimented with re-writing from scratch the prototype of complex functionality made by a non-engineering vibe-coder from another team. We didn't look at the code, and barely looked at the result.

It took about 4 days to get a production-ready reviewed code, while it took them 2-3 months to deliver something that another team judged "impossible to review".

The PR for the prototype was closed.

It helps that I'm a domain expert here, as I have a minor degree in the domain, so I can judge better. But the discrepancy is just too high to ignore.