Print it, read it in an (e-ink) ebook reader or whatever. Many people do not feel comfortable reading from a monitor screen. Also book-like PDFs tend to focus on the content instead of the surrounding chrome like navigator menus or whatever, so they can be used like that too (though an epub would probably be better for that - and the ebook reader too).
Docusaurus wants to make the docs interactive to produce a great reading experience. How can we provide that and yet print on PDF?
Remember Docusaurus input remains markdown files so you can still look for another tool that is able to generate a PDF from the same folder of existing markdown files.
We'll likely support producing a PDF but it's not the main value proposition of Docusaurus, just a nice to have for those that really want a linear static PDF instead of a beautiful and interactive doc site.
