The benefit is the static compilation.

But the "Written in rust" stuff comes with so much falsehood baggage about automatic best-in-class performance, automatic perfect safety, automatic rigor, that it is detrimental to just say "written in rust" and not provide a more nuanced statement about why that's good (or just drop it as a headline item!). You might not agree because you can single out one automatic benefit of rust b/c of Cargo (not rust), but even that is suspect b/c Rust can ship with dynamic libraries if configured to do so.

In this case, the credibility and benefits are clearer if they said "Static binary". This is all just context. If you see a benefit to that headline, that's ok.