I mean it's a repo with 1 very active contributor (https://github.com/blacksky-algorithms/rsky/graphs/contribut...), I get that they decided to skip on that
They're the first alternative full stack, the first alternative AppView, and that is something that the author should have mentioned. However, it weakens the argument so they left it out.
"Number of contributors" has never meant impact. You wouldn't dismiss openssl or curl, ya know?