Prove it. Write a very large program in an experimental state chart-based language and prove that doing the same thing in any conventional language would have been impractical or impossible.
> We debate whether Rust’s borrow checker is better than Haskell’s type classes. We argue about whether TypeScript’s structural typing is superior to Java’s nominal typing.
Life is too short to argue about stupid programming language bullshit. If you want to use Rust, do it. If not, don't. The actual code that makes up the computer system as a whole is still 99.99% the same because you are running on an operating system written in C calling a database or other systems also written in C.