So rsync rewriting all the tests puts the entire project in play. Now the entire protective surface has been sloshed through a layer of probability, so the loop must accelerate. Followup PRs add more carveouts with lengthy LLM justifications that sound perfectly plausible but amount to an erosion of the protective surface. We go from cumulative improvement to a random walk.
This is like a human cell goofing up its p53 genes and deciding that being cancer is good actually.
In the blog he posted afterwards he says he has 40 years of experience, so he is also grandpa old.