Camacho is a blind resident of Brooklyn, NY. He is currently making headline news for taking 50 colleges to court under ADA lawsuits. Camacho filed lawsuits regarding website accessibility for all 50 of the colleges. The plaintiff uses a screen-reader but experienced a barrier when trying to access information. The majority of colleges being taken to court are private, including Cornell and Vanderbilt to name a couple.
The gray area is a matter of scale and purpose. If you have a small business which serves as specific market it's a good idea to make the site as user and disability friendly as possible. If, however, your market serves segments with a likeliness to have various handicaps or disabilities you should address that with an ADA Compliance review of the site. Also consider the scale and purpose of an organization. Publicly traded large businesses need to concern themselves more than a single location family owned retailer and if someone sues your flower shop because the text was too small or didn't have "image alt tags" causing them distress... That's pretty frivolous and would likely not stand.
According to Creating an Accessible Presence for the Lodging Industry by the American Hotel & Lodging Association, “Many businesses don’t understand that the law actually requires them to make their websites accessible to individuals with disabilities. There is a common misperception that the Americans with Disabilities Act and similar state and local laws only deal with physical buildings and facilities, so-called “brick and mortar” establishments, and that non-building-related business operations—such as websites—are not covered by these laws. Nothing could be further from the truth—at least with respect to websites that have some sort of connection, or “nexus,” to physical places of business.”
The ADA is the Americans with Disabilities Act, passed almost 30 years ago in 1990. This act was originally put in motion pertaining solely to physical location. It requires establishments to provide people with disabilities easy access to various levels throughout the business. This act was set to achieve an equal experience to all people, handicapped or not.