That’s highly subjective claim to bare without evidence. All three languages are actively maintained and are growing.
My refute it simply: Rusts web development story isn’t out of the box clean like Crystal Lang’s which ships with an HTML language out of the box. So it could be categorized as a poor choice in comparison to Crystal
Did you mean HTTP server? If so, there are at least 3 good ones in Rust that are only a `cargo add` away. If you've already taken the trouble to set up a toolchain for a new language, surely a single line isn't asking too much.
My refute it simply: Rusts web development story isn’t out of the box clean like Crystal Lang’s which ships with an HTML language out of the box. So it could be categorized as a poor choice in comparison to Crystal