Of course one thing is nobody wants to sue someone because they don't understand something, because they think it means arguing they are stupid.
If you see other options I’d be happy to hear them?
My 95 year-old mother can't use apps on her iphone because she can't figure out the navigation and various modes. Because of this her phone usage is limited to answering incoming calls, making calls to the six icons we've preset on her home screen, receiving texts and replying to the last text she received (because it's still on the screen). Anything else is iffy. And she's not cognitively impaired. She's actually quite sharp for her age and lives on her own within an assisted care community.
Blind people are. At least, insofar as we still have the ADA.
One thing these companies are doing is charging blind people extra. Phrase it that way and you can maybe move some policy levers.