It is the opposite of Internet in a box. This exemplifies how, in our day and age, "The Internet" is mostly a one-sided experience where a few large organizations offer a bunch of content, which they control, for your perusal.
It would have been more "Internet in a box" if it would have helped people set up their own services and pages; and if it were extensible using other radio-capable devices.
They do talk about using FileZilla or Nextcloud to upload files, and mention using CMSes like WordPress, so maybe it's quite possible, just not a big focus.
I agree that making it easy for teachers, students, and anyone in the community making their own discoverable webpages would be a great aspect to this.
Teachers / organizers being able to share their own content is a top-requested feature indeed. A few years ago, we implemented functionality similar to LibraryBox, to mount "teacher content" from USB sticks / drives and make it instantaneously available for students. More recently, after a teacher in the Yucatan requested it in November, we implemented functionality to enable students to be able to submit homework privately to their teacher OR share their summer photos (or any other content) akin to a traditional community bulletin board with their peers, i.e., Upload2USB. There's much more to be done, but the ability to share your own content and create community exchanges of information and ideas is central to Internet-in-a-Box's (IIAB)'s ethos.
It would have been more "Internet in a box" if it would have helped people set up their own services and pages; and if it were extensible using other radio-capable devices.