An excerpt from the US state department outlining that ADA applies to websites and a call out saying it's not worth the risk.

It’s not worth the risk

webmasterBe Accessible

Mitigate the risk of being sued by the US government by making sure your website is ADA compliant. 

Between 2013 and 2021, the number of ADA website lawsuits increased by 320%

And California leads all other states in the number of lawsuits with 5,930 – meaning it is the home state to nearly half of the charges. (Source )

Don’t wait until it is too late to make your business accessible for everyone. 

Don’t believe me? 
Ask the government, check out https://www.ada.gov/resources/web-guidance/ or call them at 800-514-0301.