Zig is Linux-first, though. I don't think they have any dev who runs Windows. For games especially, you don't want Windows to be an afterthought. Maybe they'll get to it eventually, but it doesn't seem a priority.
I pretty much exclusively dev on Windows, and the only thing that's a problem for me is the lack of error and assert traces. Someone started implementing the support for it, but never finished it. It is complicated by the fact that Microsoft does not distribute DIA with Windows and Zig can't include it in its own distribution.