The weird thing about this is many core Rust people agree that Rust is not the best language that could possibly ever be, even evaluated by the core principles of Rust (that is: no UB, no mutable aliasing, no memory bugs).

And if we move outside of Rust's memory model, some people have raised issues with the inconsistent syntax, and the module-based compilation model which makes compilers inherently slow, as you have to parse the whole module every time.

So there's room for improvement, and people are already working on putting ideas into practice, and some of these people who came from the Rust ecosystem itself.

And if you happen to disagree with Rust's core goals (or just place less emphasis on them), then it's obviously not the perfect language.