[viraptor]

> Disabled users are not a significant portion of the userbase of most software.

Have I got news for you. https://www.disabled-world.com/disability/statistics/

> Currently, around 10% of the world's population, or roughly 650 million people, live with a disability.

> In countries with life expectancies over 70 years of age, people spend on average about 8 years, or 11.5 percent of their life span, living with disabilities.

Sure, not all of the disabilities will apply to using an editor. But disabilities overall are very common. A significant proportion of users of anything are disabled in some way - it just may not be obviously visible.