In my personal experience the point of Zig is to easily cross-compile C-code. Apple has gone out of their way to make it difficult to target the Mac platform, but Zig manages it fine. I haven't found a use for Zig-the-language, but apparently some people like that it doesn't insert hidden function calls. E.g. in many languages a=b+c might hide a function call in the form of operator overloading, but not Zig.