What the author is proposing isn't really "vibe" anything, it's just dedicating a small amount of time to fixing tech debt in a way that happens to involve an LLM as an assistant. The LLM in this model is honestly mostly superfluous.
Don't get me wrong, this absolutely is how LLMs should be used in a professional setting, but I just question why we needed a name and a blog post for it. This is just responsible code maintenance as it's always been.
[0] https://x.com/karpathy/status/1886192184808149383?lang=en