>However, we cannot yet endorse its appropriateness for production systems without further peer review. [0]

Not an alternative and won't be for the foreseeable future.

[0]: https://github.com/francoismichel/ssh3?tab=readme-ov-file#-s...

You are right for now. This is the last piece(ssh server) that needs to be solved for Go/Rust to prevail over the legacy systems.