The Supreme Court decided under Title II of the ADA that mental illness is a form of disability and therefore covered under the ADA, and that unjustified institutional isolation of a person with a disability is a form of discrimination because it "...perpetuates unwarranted assumptions that persons so isolated are incapable or unworthy of participating in community life." The court added, "Confinement in an institution severely diminishes the everyday life activities of individuals, including family relations, social contacts, work options, economic independence, educational advancement, and cultural enrichment."
ADA compliance isn’t a set-it-and-forget-it thing. Compliance standards must be followed and will evolve just as your website does. There are guidelines all website contributors must know to stay within ADA guidelines. It is generally not burdensome but it does require some web managers to change their workflows. For example, loading images up to your ecommerce site will always need some of that alternative text (alt tags) mentioned above.

It is important to note that the remarks in this document are intended to be informative but they are not a substitute for the requirements of the California Building Code. Also, despite the informative nature of this document, it is the appropriate jurisdictional code official who possesses the exclusive authority to enforce and interpret the requirements of the California Building Code. This document provides informal assistance regarding California accessibility requirements only for DSA's code-enforcement jurisdiction. The information contained in this document is not binding on the Division of the State Architect and is not intended or designed to give any legal advice on compliance with federal, state, or local laws and regulations. It should be noted that laws, regulations, and standards are subject to revisions, additions, or deletions, at any time.

We often see projects of gas station replacing old fuel dispensers with access compliance fuel dispensers (reach range, operable parts, point-of-sale). According to Section 11B-202.4, Exception 10, these projects would be required to comply with accessibility for primary accessible path to inside the convenient store at the gas station, public restrooms, drinking fountains, public telephones, and signs (with 20-percent limit of adjusted construction cost). Is my understanding correct regarding the replacement of old/addition of new fuel dispensers?
In 2017, plaintiffs filed at least 814 federal lawsuits about allegedly inaccessible websites, including a number of putative class actions. We arrived at this number by searching for lawsuits with certain key terms and then manually reviewing the results to remove any cases that did not concern an allegedly inaccessible website.  Our numbers are conservative, as it is very likely that not every website accessibility lawsuit’s description – upon which we based our search – contained our search terms. This caveat applies to all of the data set forth below.
Where EVCS are installed at facilities where vehicle fueling, recharging, parking or storage is NOT a primary function, compliance with Section 11B-202.4 is NOT required (see Section 11B-202.4 Exception 10). These types of facilities include shopping centers, individual stores and office buildings. While parking is frequently provided at these types of facilities, parking is not the primary function – shopping or conducting business is the primary function at these facilities.
In short, the ADA currently offers compliance suggestions for sites, but there aren’t currently any standards that you are obligated to follow. The proposed law would make sure that websites follow WCAG 2.0 guidelines, which were designed and set up by the World Wide Web Consortium, an international group aimed at creating global website standards.