Rust is a significantly more mature language. Adoption of zig has to be done on the assumption that the language will significantly improve as your project evolves, and if those improvements don't agree with your project's goals you're in something of a lurch. Rust is basically finished and adopting it has to be done on the assumption it won't change very much. I don't know what their initial logic for adopting zig was, but I think porting to a more mature language was inevitable, unless by some miracle zig happened to rapidly mature in exactly the direction they wanted,

Javascript

Perl

C obviously.

Rust is legit one of the best languages to "vibe code" in.

The emitted AST has a lower defect rate since it incorporates strong types and in-built error handling. Other pros include native code and portability, but downside is the compile time.