I understand their decision. How could the maintainers understand their codebase if most of it was not directly written by them? It is impossible to review the entire rewritten codebase. There are just too many lines of code, 1 million lines to be exact [1]. [1]: https://github.com/oven-sh/bun/pull/30412
I feel this argument is not valid, especially for large code bases.
Documentation and code quality is what is important, not who wrote the code.