Society cannot continue to disable themselves through their need to categorize people or make assumptions as to another individual's abilities.
How do I know why Miles walks off the stage? Why don't you ask him? And besides, maybe we'd all like to be like Miles, and just haven't got the guts.
No matter what we call it, poison is still poison, death is still death, and industrial civilization is still causing the greatest mass extinction in the history of the planet.