In this blog post, Avelino discusses the effectiveness of code reviews in their monolith system at Buser, revealing that nearly half of the pull requests weren't being reviewed by a human. After attempting to tighten the review process, they found out more about the problems it created, leading them to revert most of the changes. The post emphasizes the current reliance on models for reading PRs, while still ensuring a human sign-off to ensure quality.