They rival Rust in the same way that golang and zig do: they handle more and more memory-safety bugs to the point that the delta to Rust’s additional memory-safety benefits doesn’t justify the cost of using Rust any more.
Zig does not approach, and does not claim to approach, Rust's level of safety. These are completely different ballparks, and Zig would have to pivot monumentally for that to happen. Zig's selling point is about being a lean-and-mean C competitor, not a Rust replacement.
Golang is a different thing altogether (garbage collected), but they still somehow managed to have safety issues.
