I suspect the rise of mobile has something to do with it. A lot less space to creative with something like word wrapping when your primary audience is on a vertical phone screen.
I think the issue is that writing is cheap and development is not. You can probably find this kind of style in those "cool articles" that magazines/newspapers pull out every once in a while. The rest of them will be a classic text interlaced with images and videos.
You can probably find them on "cool product" websites, even if invisible. I'm sure vercel has a lot of new CSS everywhere.
Development is cheap when the backward compatibility target is IE10. You can safely ignore any CSS fanciness from post-2010.
This is still useful for web designers, even if it doesn't make it into a business website (most websites are created to sell something and target the lowest common denominator browser-wise).
I don't keep up on all advancements in CSS, but maybe I should try. I could imagine several current projects I'm working on that could benefit from this set of CSS features. I'm sure our front-end designers/developers haven't heard of this either, or they'd be using it.
