📚 Disabled users, what advantages and disadvantages do you find in Linux and its ecosystem?

I've always felt like accessibility was a second-thought whatever the OS considered.

Over the years, I've seen a couple of peope actually commenting on how things were for them in computing equipment usage ; I was wondering how was Linux usage for disabled people, what works, what does not, what could be improved and how.

Basically, what are the hindsights you could give to people contributing to accessibility features?

Do not hesitate to mention what your workflow is, for what usage, etc.