Although all of those things are true, I think the main point being made is why choose Rust for that, instead of Go, .NET, etc, any of which offer everything you've outlined as being worth having, while having fewer of the downsides of Rust.
I'm talking about things like exhaustive "switches", built-in, ENFORCED handling of "missing" values (null, undefined), and finally useful error handling.
I actually don't need any of the baremetal features of Rust. It's just that most of it's "zero-cost" abstractions are still far superior to those of other languages.
(Some dislike it, but Java’s checked exceptions are exact homologous of result types)
Outside of that, yeah they just differ in very low-level aspects that most developers don't even know about.
any of which offer everything you've outlined
Mono is mostly only relevant if you need platform specific capabilities that wont be covered in .NET.