This has nothing to do with the language, and it's so irritating to see people falsely claiming it is. There is nothing whatsoever about Rust that meant the engineer had to write code to the effect of

  if result.is_err() {
    panic!()
  }

That was a choice on the engineer's part, not something caused by the language. You could choose to write that code in any language. It might even be the right choice sometimes! But whether or not it was the right choice, the fact remains that responsibility stops with the programmer(s) who decided to have that code, not somehow with the language.