Some of you might be interested in this Mastodon thread. It’s a bit of bashing PDFs for having poor accessibility, and some guidance on improving PDFs for accessibility.
Some people are saying they prefer MS Word over PDF for accessibility reasons. Of course the elephant in the room is that “accessibility” is an over-loaded word. It usually refers to usability by impaired people, but in the case of being generally usable to all people on a broad range of platforms, MS Word is obviously inaccessible due to being encumbered by proprietary tech by a protectionist corporation.
I’m not familiar with that, but I’m aware of services for blind people to access books for free. It’s a good way to balance out the disproportionate lack of access to information.