Everyone starts off without references, and there's already less of a pipeline from user to helpful contributor to fellow maintainer than most projects want without having to add more chokepoints. There isn't a solution without downsides while there are people using LLMs.

This works if you have the luxury to select the people whose PRs you review, but in a corporate environment you just don't have that option. I would love to just reject obvious LLM code, but it's not going to keep me employed. Instead I'm stuck at figuring out how to meaningfully review LLM changes and how to manage the mental model with these rapid changes.