Yes, it does matter. It has excellent throughput and latency for certain classes of systems, while others are impossible to build. Rust may not impose this constraint while meeting its goals.
Seems like Rust is better in every way right? I can't help but wonder why is it that Go is so much more popular when it comes to language of choice for networked and multi-threaded applications.
Primarily things like web services where memory and CPU footprint matter less than raw performance or correctness, but also tooling which needs to operate on cloud APIs which often have no Rust SDKs available.