Because it eventually fails and to fix it, one must understand the code, something that is lacking when "vibe coding."

No one with this mentality has any business working with code ever

Even the writers of Star Trek, a fictional fantasy show with near-magic super AI, understood that the Engineers would eventually have to fix something the AI couldn't, without the AI helping them

Because if you’re working on anything of note, you will need to sustain, scale, and operate that software while hopefully designing for it at a high level. LLMs are not suited for those problems, at least not anytime soon

How do you know it satisfies the requirements?