I agree that Rust isn't the primary ecosystem. But that's not a reason to dismiss Rust. If Rust could create components that can be incorporated into C/C++ systems, then we'd have a real contender for systems programming. The problem is Rust is strict, and it only goes one way, from C/C++ to Rust. That's the right first step!

Saying C++ is better than Rust "once you know it" doesn't make a lot of sense to me. No language is intrinsically better once mastered by a productive programmer.