Rust's syntax and verbosity sometimes leaves much to be desired or the convoluted syntax and structures to get interior mutability, but it doesn't matter because of its immense power in the spirits of say ML, Haskell, or C#. Rust can do a lot of what they do and a lot more, and safer. Pony and Idris are barely used but have features Rust doesn't have.
I think too many people poo-poo Rust because they either don't want to understand it or can't grasp its concepts like lifetimes (liveness) or move. It's easy to dismiss what one doesn't understand and stake a claim with an irrational, tribal ego opinion rather than consider the alternatives in the programming toolbox for a given purpose.