For other packages, this is where we start to see "We rewrote ______ in Go/Rust/blah" type articles. Nobody working on the product groks the entire code base, and rather than reading the "archaic" language, it is decided that it would be better to eliminate the tech debt and rewrite the entire thing in a language dejour so that "more" people will be familiar. This is usually followed by a series of releases fixing the bugs that were re-introduced because of all of the aha gotchas originally solved in that not understood archaic code base