Why Markdown-heavy diffs are hard
Reflowed paragraphs, moved sections, generated tables, and broad rewrites can make a coherent document look like unrelated changed lines. Reviewers spend energy reconstructing the final reading experience.
When the raw diff remains essential
Use the diff for exact deletions, changed links, hidden front matter, formatting syntax, and suspiciously broad source transformations. Document and diff views complement each other.
How rendered review changes behavior
Reviewers comment on claims, instructions, structure, and reader outcomes. Section-level comments keep those decisions meaningful even when an agent rewrites surrounding lines.