If this means that the signal of valued contribution swings from "PRs merged" to "Issues raised with PRs merged" then I'm all for it.

In LLM-friendly repositories it saves everyone's time if the maintainers are the ones steering the machines, and in LLM-unfriendly ones it saves everyone's time by not having generated PRs thrown at the maintainers.

This is not a guarantee, as many issues either do not require a PR, or the developer does not want to implement XYZ for whatever reason.