Not true. Look up the Americans with Disabilities Act (ADA) by the EEOC. Here, I’ll do it for you. But if I am mistaken, I’d love to know where it defines the vision criteria for exclusion.
Actually, when I was looking it up, it sounds like you’re talking about being considered legally blind and qualifying for Social Security disability benefits, which is not the same as being protected under the ADA.
I’m very much a laymen, and this is purely my opinion, but this whole idea that people can say whatever they want because of freedom of speech is bullshit. I get it’s nuanced: you’re free to say what you want, but not free from the consequences. Blah blah blah. Problem is, no one can agree on the consequences. People like this can continue to spew their hurtful hate left and right, and nothing is done to them to punish them for their obvious intolerance. Meanwhile, the people that are affected by this vitriolic bullshit have to keep looking over their shoulders every damn day of their lives waiting for the inevitable escalation that will come.
https://www.psychologytoday.com/us/blog/logical-take/202007/hate-has-no-home-here-and-the-paradox-tolerance