That isn't "how lisp works," that's how most people choose to format their lisp code. And this is the entire point of the article. He discusses this at length:

That isn't "how lisp works," that's how most people choose to format their lisp code. And this is the entire point of the article. He discusses this at length: to reach the universality and speed of a `gofmt`-like formatting tool, we would have to give up on the idea that s-expressions should be indented differently based on their content. Personally I find this a very tempting tradeoff. You may not, but indenting different s-exps in different ways based on their first element is not "correct," it's just... what most people choose to do.