The point is, there cannot exist the same sort of terrible Rust code as the terrible C code he complains about. Because the compiler won't let you do it. With C you can write code that you don't understand is bad and broken because the compiler happily obliges and the program may even seem to work fine. With Rust you cannot because you're immediately told that the code is problematic (when it comes to memory safety. Of course there are other ways to write bad unmaintainable Rust code.)