You're being too reductionist. In the specific case of Rust, no security is not its primary strength. In fact, it has no standard and a few soundness issues, a

You're being too reductionist. In the specific case of Rust, no security is not its primary strength. In fact, it has no standard and a few soundness issues, and I'm not sure what certifications it has, so this makes little sense. What Rust does have is very impressive. It has a type system that can express a very large subset of data race-free and memory safe programs. It's one of the few languages to get strings right. It has a fantastic package manager. It has destructors, so no more "defer f.Close()". It has sum types, so your state machines actually look like state machines, and "if err != nil { return err; }" is just "?". Most of these features aren't unique to Rust at all, but their combination definitely is, so I hope this unintentional advertisement explains why "cli tools or backend services" developers like Rust.