Google’s review tooling gives engineers a button that says the analyzer was wrong, and disables analyzers that collect too many of them. An agent never presses it, so a guard pipeline aimed at agents loses the only instrument that ever measured its own rules.
Run git blame on a line an autonomous agent wrote and it points at a service account. The commit is spotless. The one thing debugging actually needs, a person who remembers why, already exited.
Code generation is a commodity. The defensible value is knowing whether the output is safe to ship, and almost nobody is building for that.