FAWK: LLMs can write a language interpreter

I've been working on my own web app DSL, with most of the typing done by Claude Code, eg,

  GET /hello/:world
    |> jq: `{ world: .params.world }`
    |> handlebars: `<p>hello, {{world}}</p>`
  
  describe "hello, world"
    it "calls the route"
      when calling GET /hello/world
      then status is 200
      and output equals `<p>hello, world</p>`

Here's a WIP article about the DSL:

https://williamcotton.com/articles/introducing-web-pipe

And the DSL itself (written in Rust):

https://github.com/williamcotton/webpipe

And an LSP for the language:

https://github.com/williamcotton/webpipe-lsp

And of course my blog is built on top of Web Pipe:

https://github.com/williamcotton/williamcotton.com/blob/mast...

It is absolutely amazing that a solo developer (with a demanding job, kids, etc) with just some spare hours here and there can write all of this with the help of these tools.

That is impressive, but it also looks like a babelfish language. The |> seems to have been inspired by Elixir? But this is like a mish-mash of javascript-like entities; and then Rust is also used? It also seems rather verbose. I mean it's great that it did not require a lot of effort, but why would people favour this over less verbose DSL?