Sorry, I should have said this explicitly in the original comment: I think you're likely _correct_ that there isn't a clear increase in the rate of bugs attributable to LLM-authored code in rsync. Your analysis provides evidence in this direction; these are just the things that made me go "hmm". They're not accusations or claims that the conclusion is invalid. But they're definitely things to be curious about.

Regarding unlabeled LLM-authored commits, I don't think it's unreasonable in general to think that an open-source project might have had unlabeled LLM-authored commits at some point before 2026. Looking more closely at rsync's recent commit history, I think it's less likely in this case. There's just a low number of commits in general, _until_ large batches of Claude-authored commits start showing up early this year. But this then raises some questions about the bugs-per-commit metric; it does correct for something like "size of release", but also obscures a significant shift in commit velocity that may be downstream of adding LLM development tools to the workflow.

Like I said, I don't have a dog in this fight, and I try not to approach sorts of questions from a position of explicit advocacy. I do think it's an interesting question, though, and we should try to understand what the data is actually telling us.