It's done for other languages, as others here have mentioned, but it happens more for Rust lately. A project being advertised as being written in JS or Java or

It's done for other languages, as others here have mentioned, but it happens more for Rust lately. A project being advertised as being written in JS or Java or C# does have a signal about how easy it is for the reader to contribute (if they know the language), to integrate it with other projects they use (network effects) or what their operation might be (can I build a single binary and deploy everywhere? what is the observability and debugging tooling like?). Rust answers some of those implicit questions in a way that is acceptable to a lot of us.