Zig (programming language) - First appeared 8 February 2016; 9 years ago
Rust (programming language) - First appeared January 19, 2012; 13 years ago
Also, Zig at this point isn't really a brand new language anymore. I have comments on their issues dating back to 2018, so it's been a very active language since at least then.
Just getting started is an even bigger reason to have good docs to clearly communicate how the libraries and APIs work!
I wouldn't even read a push request containing a new function if the creator didn't bother writing a short description and usage clarification.
Getting started is a good excuse for limited libraries or support (same situationwith rust). But lack of even basic docs is not acceptable if you want user adoption.