Edit: Going through this author's website, it seems like a lot of their posts are about rediscovering low-level programming concepts through Zig. Like this article, where they discover you can't compare strings directly, and you have to use memcmp:
https://www.openmymind.net/Switching-On-Strings-In-Zig/
They claim that they blog because they "find that [they] retain things better when I write about them." No problem with that. Just a little odd to see on the hn front page, I suppose.