Neat project! Beauty feels like an under-explored part of programming. It's neat to see how a language can be designed to be more expressive for a particular use case. I wouldn't make a call to use a piece of tech at work just for beauty but I certainly do that all the time in my personal projects.
Am I reading something wrong? I thought they meant it outputs beautiful websites, whereas your comment seems to imply that it's the code/(library api) that's beautiful.
Outputting beautiful designs is a function of the css, no? The bundled css is quite minimalist, and it comes packaged with a relatively simple starter website.