Yes, they can choose one of hundreds of text messaging apps. If not someone can help them. If your bar for a product is that a disabled person has to be able to

Yes, they can choose one of hundreds of text messaging apps. If not someone can help them. If your bar for a product is that a disabled person has to be able to use it easily, no exceptions, then you are going to destroy a lot of products, from mountain bikes to headphones to pepper grinders.