The single 13yo issue is anecdata.

They obviously have the full git blame statistics but chose not to include them in the blog post, which is a bit concerning.

It's weird to assume that this is all smoke and mirrors where AI is fixing AI's bugs. When we dove into the rsync issue, what was happening is that AI was revealing bugs that had been previously unknown, resulting in the need to fix them. I would be stunned if that were not the case here.