Oh. I thought your point was that their inclusion criteria were too narrow (.edu only) and as such did not include all universities.
I remember this wording irritating me when I was a k-12 student myself. I would get excited at "Free for students!" headings and then be disappointed when the discounts were in fact for higher education only.
It's misleading, really.
My wider point is that it's disingenuous to have a bold heading [0] "Free for individual students and educators", and then in the FAQ lower on the page state:
"You're not eligible if...you're a k-12 student or k-12 educator"[0]
[0]: https://www.notion.so/product/notion-for-education