I agree with the author in general. I think the web would benefit from a better distinction of documents and the web. However it is not that easy, because there

I agree with the author in general. I think the web would benefit from a better distinction of documents and the web. However it is not that easy, because there are valid in-betweens, like Jupyter notebooks. Therefore I'd prefer a real progressive web over a document web and a app web. Do the fancy features, but also make sure your site works in a very simple environment. A blog should be readable everywhere, even in lynx. Interactive, discoverable documents and multimedia content should include a text fallback if possible. And real apps like a photo editor -- well they need to be executed.