While I do not use any adaptive devices (currently), I am a disabled SWTOR player. Dyslexia, dysgraphia, dyscalculia, dyspraxia (which makes gaming a bit harder), ADHD, rheumatoid arthritis, fibromyalgia, and other things.
7.0 font changes have been hell to read. It makes me sad, because SWTOR is my only game. (I literally have only played three video games for any length of time in my entire life. I didn't even play Mario as a kid.)
I also use the game to teach. I have been a life skills teacher for students with disabilities since 1997, and I use it to teach online social skills, social gaming, resource management, goal setting, and a laundry list of other skills.
I don't have anything to contribute to your particular video, but if you do other explorations of disabled gaming/gamers, I would be interested.