That were just the examples when Rust is not really suitable as a drop-in replacement for C/C++. Of course, if your platform is well-supported by Rust compiler and you don't have to write safety critical applications, then using Rust is just a matter of choice.

I don't argue whether it's good or bad language. It's a quite interesting one with its own pros and cons. If it fits you, then it's great, but you should know its limitations.