Right, that's not an instance of "... language can even come close to doing what C can," absent an argument about how architectures that LLVM doesn't support are easy to write custom C compilers for but not LLVM backends. LLVM just happens not to support that many architectures today.

Also there have been a few attempts at a C backend for LLVM, and code in Rust that is compiled through C will generally retain its safety and speed properties.