This is unfair. If you're going to qualify C++'s breaking changes as "slight specific manageable caveats", then you need to do the same for Rust. "Rust changes

This is unfair. If you're going to qualify C++'s breaking changes as "slight specific manageable caveats", then you need to do the same for Rust. "Rust changes are backwards-compatible with slight specific manageable caveats" is a perfectly reasonable description of Rust's language changes.