It's true that writing code in safe Rust does not make other non-Rust code safe. Nevertheless, the more code we write in Rust, the safer we will be. Especially

It's true that writing code in safe Rust does not make other non-Rust code safe. Nevertheless, the more code we write in Rust, the safer we will be. Especially because popular kernels and system libraries are often very well tested these days, whereas application code newly written by developers of varying skill levels likely won't be.