I have a hard time believing any of these natural language only prompters are being hired as developers if they don't understand the syntax. Part of the issue is LLMs are indeterministic and hallucinate. They also don't recognize every bug they generate.
I don't agree with the vibe coding methodology (or lack thereof) myself but here's a direct lowest common denominator counterexample of a natural language programming job position.
In practice, we are seeing and will continue to see developer adjacent positions submitting PRs. Not on a whim but after having understood the codebase or parts of it using the AI to translate syntax to English.
They need to understand what the code does.