lib/response.js showed the highest ownership concentration in an analysis of Express's git history

[SushantVerma7969]

built a CLI called git-archaeologist that analyzes ownership concentration from git history. I ran it across 26 major OSS projects as a benchmark — Express was one of them.

lib/response.js came up as the most concentrated file in the Express codebase — 128 changes, 53 authors, with a large share of historical commit activity concentrated among a small number of contributors.

Full report with methodology and raw data:
https://sushantverma7969.github.io/git-archaeologist/

Demo video (2 min, running git-arch on Express):
https://youtu.be/NKVN00Dj6YA

I'm aware the metric measures historical commit activity concentration, not who actually understands the code — that limitation is documented in the report.

Curious whether this matches what you observe maintaining Express, and where the methodology is wrong.