I don't agree that using the ADA in this way would be abuse.

The ADA was a rare "great" law, in that it is sweeping, applies broadly to many different forms of disability, and it provides companies very little leeway to weasel their way out of complying. It also provides us with a very, very good generic framework for consumer protections, should we ever get an administration who cared about consumer freedom over corporate interests. I'd love to see other (not disability related) ADA-like laws that compel companies to make other reasonable accommodations to be inclusive of reasonable consumers. All kinds of amazing "consumer bill of rights" regulation could be modeled after the ADA.