I'll buy that, if you'll also agree that this ruling is liberal bullshit. Even if it conforms to the letter of the law, it is definitely not the intent of the law.
Please note I'm not asking anyone to be less liberal or care less about the ADA; I'm simply observing this is a violation of the intent of the law and of common sense. The fault here is the government's, I'm not pinning this on liberalism in general.
This sort of thing is actually dangerous; it generates anti-ADA sentiment in the public at large. Which would be unfortunate, as the ADA is broadly a good idea. (There are corners I can quibble about, but that's because I'm the contentious sort. It's mostly good.)
Also, even as a little-l libertarian, I would observe that much of the reason the market was "solving" this before the government clumsily stepped in is that the market was well aware that this requirement was coming as a result of the already-existing ADA law. They probably just thought that maybe the government would let them run a test project before they tried to put it into production, at which point they would dot their is and cross their ts, something I find a rather reasonable assumption. Markets are very, very good at serving the majority, and they are very, very good at serving niches with resources proportional to the size of the niche, but if you want the entire market to serve a niche for social reasons you will need government intervention to do it.