Because it's not relevant. 1. In the video he's saying that you can't replace memory safety mitigation techniques like ASLR with memory safe languages. He note

Because it's not relevant. 1. In the video he's saying that you can't replace memory safety mitigation techniques like ASLR with memory safe languages. He notes that there will always be some unsafe code and that mitigation techniques are free, so you'll always want them. No one should disagree with that. ASLR is effectively "free", and unsurprisingly all Rust code has ASLR support and rapidly adopts new mitigation techniques as well as other methods of finding memory unsafety. 2. The link about replacing gnu utils has nothing to do with memory safety. At all. Even if it were related, it would simply be an argument from authority.