Zig is young. They're spending their time maturing the core ecosystem --- the compiler, the standard library, and so forth. It's perfectly reasonable to expect early adopters to "RTFS/read the fucking source". *When* they start writing documentation, I'd be perfectly happy to hear comments like "The zig documentation is crap".
At this stage of the project, I'll be honest, I find it upsetting to read comments like this.