That article does not even mention Ada/SPARK... So much for safety. :P Yup, there is static analysis with Ada/SPARK and it is great. It is much more general-purpose than ATS, and there are other things in Ada/SPARK that increases safety in general, not only memory safety.
For what it is worth, Ada/SPARK has a strong presence in safety-critical domains like aerospace and medical devices, while Rust is gaining popularity in system programming and web development. ^^ I'm surprised that it is not as widespread. That, or lots of misconceptions.