I don't think the 'Rust is not as far along as backend web Haskell' is true in my (minimal) experience.
I've worked at one very small company and one very large company, and at both Rust was a much more serious/common consideration for web services than Haskell.
I've worked at one very small company and one very large company, and at both Rust was a much more serious/common consideration for web services than Haskell.