Author here. Fair. Mentioned this in another reply, but yes, the case study examples were poor, and I shouldn't have shipped those. Ironically I've used these design commands on a production project very effectively, and hence decided to open source, but couldn't screenshot the real examples as the project has not launched. I've removed the lackluster examples for now.
It was especially jarring on the last example with the cool looking chart, then removed for a bunch of text.
agreed, the information density on the "after" example is much worse for most dashboard use cases. Way too much space, not enough info. But I guess I'm not exactly surprised based on the style of the page being both zoomed in and spaced out