It's often basically true though - the guarantees that rust can make wrt to lifetimes and memory allocation clearly enable programs to allocate less and be more aggressive with what they do allocate (all while being a fairly high-level language - I don't know if most rust programmers actually know what memory safety is at this point)

I'm really not a huge fan of rust as a language but it is clearly delivering results in that e.g. I find myself actively hoping that people rewrite web tooling in rust and so on. C++ is a mess that should be allowed to die.