The real argument from that piece is that heap allocation is something to be avoided, and there are alternatives to malloc/free pairs. There are other benefits,

The real argument from that piece is that heap allocation is something to be avoided, and there are alternatives to malloc/free pairs. There are other benefits, but specifically having the compiler insert lots of frees is not one of them, for developers that prefer arena memory management for efficiency, simplicity, organization, and cache behavior. In fact, there are lots of arena/bump allocator crates! It's not a negative point for Rust, but it solves a problem this author doesn't have.