I love seeing stuff like this that would probably not exist if not for LLMs making exploring these kinds of ideas relatively cheap and quick to do.

My takeaway from this though is that nginx is pretty impressive on its own. Also this stuck out:

It's meant to be an alternative to nginx and Caddy, and the design bet is about configuration. Those servers give you a declarative config language - location blocks, rewrite rules, map directives, try_files - and then, once the declarative language hits its limits, an optional scripting runtime bolted on the side (Lua, or Caddy's plugins). Behavior ends up split across two layers: directives that quietly grow their own control flow, plus scripts that run somewhere in the request lifecycle you have to keep in your head.

I think the bet is misplaced - people prefer configuration over code and long have. The built-ins meet enough peoples needs entirely and they don't need to write C code.