Yes, this title is funny, however the ruling in this case will literally open up doors to disabled people that were not there before.
All my life, I've had to go through alternate entrances and through dingy, dark places or learn how to navigate the maze to find the handicap entrances. I worry, however, that this decision will place a burden on small businesses and the larger issues of where to sit once you're inside of a restaurant or whether there's a handicap accessible bathroom may be overlooked. This decision is only one small victory in making any place truly accessible.
For example, I find when I go out to eat that there are designated handicap areas, although not explicitly said, if I go to a restaurant, they tend to seat me in the same seat 9 out of 10 times. This is for the convenience of the wait staff and accessibility around my wheel chair. However, I would love to be able to sit somewhere else for a different view of the action. Most places can, and will, seat you some place else if you ask, so it is worthwhile to ask.