How ? There are languages with more expressive type systems high level type systems (Haskel/OCaml presumably). There are languages with much more mature libraries, ecosystems and tooling (C#/Java). There are languages with both (F#/Scala).
What is it that makes Rust a good applications programming language ? You said it your self GC doesn't really matter that much in this space and GC based languages are just more elegant and not to mention the tooling is way more mature. Runtime also doesn't matter that much and with the recent changes to .NET can be avoided anyway.
This Rust fanboyism is turning in to the new node hype "use node for everything node is web scale fast because it uses an event loop io instead of thread based io", "use rust for everything because the type safety is literally the best and it's the only language with a strong type system out there". I get it it's new and shiny, I like it to, and it has a strong argument to make in the systems programming - the designers are doing a good job of making trade offs that let you retain low level control while still having memory safety - but these tradeoffs are just that and they come at the expense of higher level stuff, higher level languages don't need to make these because they don't pretend to be systems programming languages.