[dureuill]

The person you're responding to was specifically responding to your criticism that Rust does not provide a specification that implementations can target.

You're now listing languages, such as Python, that don't have a specification, so it is unclear what your criticism actually is.

By python's standards, Rust is very good: a lot fewer breaking changes (changes are tested against the entire, huge, open source ecosystem to check if they are breaking, I think this level of testing is unparalleled), the release and versioning process is extremely clear (one minor release every six weeks, patch releases to address unexpected regressions + security issues), and it also have a really well specified evolution process through the RFC process.